Fish Crystal

Fish Crystal




RARE Lalique Crystal Fish GOLDEN BROWN W Lalique Gift Bag and Box
RARE Lalique Crystal Fish GOLDEN BROWN W Lalique Gift Bag and Box
$79.99
Time Remaining: 24d 19h 26m
Buy It Now for only: $79.99

Crystal Jelly fish Art Glass Paperweight Mouth Blown Poland NEW Blue Color 7
Crystal Jelly fish Art Glass Paperweight Mouth Blown Poland NEW Blue Color 7
$29.99
Time Remaining: 5d 21h 53m
Buy It Now for only: $29.99

Lalique crystal fish new with box smokey grey
Lalique crystal fish new with box smokey grey
$75.00
Time Remaining: 4d 13h 12m
Buy It Now for only: $75.00

Large Vintage SABINO France Art Glass Opalescent Crystal ANGEL FISH
Large Vintage SABINO France Art Glass Opalescent Crystal ANGEL FISH
$9.99 (1 Bid)
Time Remaining: 6d 14h 17m

KOSTA Crystal Fish Sculpture Paperweight by VICKE LINDSTRAND Signed LH
KOSTA Crystal Fish Sculpture Paperweight by VICKE LINDSTRAND Signed LH
$19.00
Time Remaining: 2d 15h 6m

Lalique Paris France Crystal Poisson fish NIB in MINT condition Lalique Paris
Lalique Paris France Crystal Poisson fish NIB in MINT condition Lalique Paris
$55.00 (1 Bid)
Time Remaining: 4d 1h 49m

Lalique Fish sculpture Gold luster crystal
Lalique Fish sculpture Gold luster crystal
$95.00
Time Remaining: 24d 14h 15m
Buy It Now for only: $95.00

NEW Lalique Crystal Emerald Poisson Fish NIB Mint Condition
NEW Lalique Crystal Emerald Poisson Fish NIB Mint Condition
$80.10
Time Remaining: 16d 22h 50m
Buy It Now for only: $80.10

VTG LALIQUE STYLE FROSTED FISH ON A CLEAR CRYSTAL STAND LOT 155
VTG LALIQUE STYLE FROSTED FISH ON A CLEAR CRYSTAL STAND LOT 155
$9.99 (1 Bid)
Time Remaining: 5d 12h 41m

Lalique Deux Poissons Entwined Fish Crystal Sculpture
Lalique Deux Poissons Entwined Fish Crystal Sculpture
$1,650.00
Time Remaining: 27d 12h 32m
Buy It Now for only: $1,650.00

Lalique Leaping Fish Crystal Ring Dish
Lalique Leaping Fish Crystal Ring Dish
$99.99
Time Remaining: 19d 17h 15m
Buy It Now for only: $99.99

MURANO ITALY FISH SCULPTURE CRYSTAL 7 1 2 TALL5
MURANO ITALY FISH SCULPTURE CRYSTAL 7 1 2 TALL5
$175.00
Time Remaining: 27d 12h 45m
Buy It Now for only: $175.00

Lalique Fish Platter Crystal Plate Bowl w Fish Border 11 x 9 Fish Not Included
Lalique Fish Platter Crystal Plate Bowl w Fish Border 11 x 9 Fish Not Included
$239.99
Time Remaining: 7d 3h 16m
Buy It Now for only: $239.99

Lalique Paris France Crystal Poisson fish NIB in MINT condition
Lalique Paris France Crystal Poisson fish NIB in MINT condition
$56.00 (2 Bids)
Time Remaining: 4d 1h 43m

Lalique Fish Crystal Purple
Lalique Fish Crystal Purple
$111.22
Time Remaining: 14d 13h 28m
Buy It Now for only: $111.22

 LG TROPICAL FISH CRYSTAL GLASS SCULPTURE COBALT BLUE GREEN 8 1 2 x
LG TROPICAL FISH CRYSTAL GLASS SCULPTURE COBALT BLUE GREEN 8 1 2 x
$39.98
Time Remaining: 17d 14h 7m
Buy It Now for only: $39.98

lalique crystal fish figurine
lalique crystal fish figurine
$60.00
Time Remaining: 20d 57m
Buy It Now for only: $60.00

BACCARAT CRYSTAL KOI FISH SCULPTURE
BACCARAT CRYSTAL KOI FISH SCULPTURE
$199.00
Time Remaining: 1h 17m
Buy It Now for only: $199.00

Lalique Fish Frosted Crystal Art Glass Figurine Light Pink
Lalique Fish Frosted Crystal Art Glass Figurine Light Pink
$98.00
Time Remaining: 28d 15h 30m
Buy It Now for only: $98.00

DAUM ANGEL FISH CRYSTAL WITH LABEL EXCELLENT
DAUM ANGEL FISH CRYSTAL WITH LABEL EXCELLENT
$149.00
Time Remaining: 26d 10h 3m
Buy It Now for only: $149.00

NEW Lalique Crystal Lilac Poisson Fish NIB Mint Condition
NEW Lalique Crystal Lilac Poisson Fish NIB Mint Condition
$80.10
Time Remaining: 18d 17h 10m
Buy It Now for only: $80.10

NEW Lalique Crystal Turquoise Poisson Fish NIB Mint Condition
NEW Lalique Crystal Turquoise Poisson Fish NIB Mint Condition
$80.10
Time Remaining: 18d 17h 11m
Buy It Now for only: $80.10

Lalique Crystal Red Damsel Fish Figurine
Lalique Crystal Red Damsel Fish Figurine
$129.99
Time Remaining: 27d 16h 21m
Buy It Now for only: $129.99

NEW Lalique Crystal Yellow Poisson Fish NIB Mint Condition
NEW Lalique Crystal Yellow Poisson Fish NIB Mint Condition
$80.10
Time Remaining: 18d 17h 11m
Buy It Now for only: $80.10

LALIQUE 3003000 LIGHT PURPLE FISH CRYSTAL BRAND NIB FRENCH WATER PARIS SAVE FS
LALIQUE 3003000 LIGHT PURPLE FISH CRYSTAL BRAND NIB FRENCH WATER PARIS SAVE FS
$92.99
Time Remaining: 1d 21h 12m
Buy It Now for only: $92.99

Vint STEUBEN Crystal Glass FISH Frosted Eyes Mid Century Modern George Thompson
Vint STEUBEN Crystal Glass FISH Frosted Eyes Mid Century Modern George Thompson
$499.99
Time Remaining: 27d 14h 40m
Buy It Now for only: $499.99

Baccarat Crystal Green Blow Fish Figurine in Box 7 x 5
Baccarat Crystal Green Blow Fish Figurine in Box 7 x 5
$199.99
Time Remaining: 3d 12h 45m
Buy It Now for only: $199.99

BACCARAT CRYSTAL FISH FIGURINE SCULPTURE FRANCE ART GLASS BLOWFISH SIGNED
BACCARAT CRYSTAL FISH FIGURINE SCULPTURE FRANCE ART GLASS BLOWFISH SIGNED
$149.99
Time Remaining: 23h 17m
Buy It Now for only: $149.99

WATERFORD CRYSTAL FISH PAPERWEIGHT TROPICAL FIGURINE GLASS
WATERFORD CRYSTAL FISH PAPERWEIGHT TROPICAL FIGURINE GLASS
$38.65
Time Remaining: 9d 7h 49m
Buy It Now for only: $38.65

CRYSTAL STAR FISH PAPER WEIGHT HOME DECOR
CRYSTAL STAR FISH PAPER WEIGHT HOME DECOR
$29.99
Time Remaining: 6d 12h 10m
Buy It Now for only: $29.99

Orrefors Crystal Fish NBD label Excellent Condition
Orrefors Crystal Fish NBD label Excellent Condition
$40.00
Time Remaining: 14d 14h 32m
Buy It Now for only: $40.00

DAUM CRYSTAL SMALL FISH PURPLE ANEMONE BRAND NEW IN BOX 05458 C F SH
DAUM CRYSTAL SMALL FISH PURPLE ANEMONE BRAND NEW IN BOX 05458 C F SH
$249.98
Time Remaining: 29d 20h 6m
Buy It Now for only: $249.98

Incredible Swedish Neodumium Crystal Fish
Incredible Swedish Neodumium Crystal Fish
$49.99
Time Remaining: 4d 23h 10m
Buy It Now for only: $49.99

Vintage Art Glass Kristalcolor lead crystal fish with label made in Italy 2
Vintage Art Glass Kristalcolor lead crystal fish with label made in Italy 2
$9.00
Time Remaining: 6d 23h 3m

DAUM CRYSTAL FISH MINI COUPLE AMBER VERT BRAND NEW IN BOX 02656 F S
DAUM CRYSTAL FISH MINI COUPLE AMBER VERT BRAND NEW IN BOX 02656 F S
$225.00
Time Remaining: 7d 19h 7m
Buy It Now for only: $225.00

Crystal Cut Fish Figurine
Crystal Cut Fish Figurine
$22.99
Time Remaining: 12d 14h 7m
Buy It Now for only: $22.99

Lalique Clear Crystal Fish Sculpture Figurine
Lalique Clear Crystal Fish Sculpture Figurine
$91.98
Time Remaining: 15d 15h 7m
Buy It Now for only: $91.98

Lalique Crystal Koi Fish Caviar Set Centerpiece Bowl Covered Dish Igor
Lalique Crystal Koi Fish Caviar Set Centerpiece Bowl Covered Dish Igor
$650.00
Time Remaining: 5d 22h 18m
Buy It Now for only: $650.00

Louette L Clear Crystal Fish Signed 5 Height
Louette L Clear Crystal Fish Signed 5 Height
$79.00
Time Remaining: 3d 13h 51m
Buy It Now for only: $79.00

Baccarat Art Glass Crystal Fish Red Mint Condition
Baccarat Art Glass Crystal Fish Red Mint Condition
$89.99
Time Remaining: 3d 23h 30m
Buy It Now for only: $89.99

Pair Tiffany Dolphin Koi Fish Crystal Glass Candlesticks
Pair Tiffany Dolphin Koi Fish Crystal Glass Candlesticks
$129.00
Time Remaining: 6d 17h 44m
Buy It Now for only: $129.00

Clear Crystal Glass Fish with 1 Controlled Air Bubble 4x3 Paperweight Pre owned
Clear Crystal Glass Fish with 1 Controlled Air Bubble 4x3 Paperweight Pre owned
$7.50
Time Remaining: 14d 13h 35m
Buy It Now for only: $7.50

Lucky Fish by Baccarat Crystal
Lucky Fish by Baccarat Crystal
$115.00
Time Remaining: 23d 10h 28m
Buy It Now for only: $115.00

Signed Orrefors Crystal Fish Paperweight Figurine Large 24
Signed Orrefors Crystal Fish Paperweight Figurine Large 24
$25.00
Time Remaining: 10d 10h 28m
Buy It Now for only: $25.00

CRYSTAL ART GLASS ANGEL FISH ANGELFISH BLUE YELLOW BEVELLED OVAL MIRROR GIFT BOX
CRYSTAL ART GLASS ANGEL FISH ANGELFISH BLUE YELLOW BEVELLED OVAL MIRROR GIFT BOX
$7.99
Time Remaining: 25d 17h 35m
Buy It Now for only: $7.99

Colombia Crystal Tropical Fish Heavy Figurine
Colombia Crystal Tropical Fish Heavy Figurine
$45.67
Time Remaining: 10d 1h 4m
Buy It Now for only: $45.67

MARCOLIN ART CRYSTAL FISH PAPERWEIGHT 24 CARAT PURE GOLDSIGNED
MARCOLIN ART CRYSTAL FISH PAPERWEIGHT 24 CARAT PURE GOLDSIGNED
$50.00
Time Remaining: 7d 18h 34m
Buy It Now for only: $50.00

LALIQUE CRYSTAL FISH CACHET MENTHE MINT 3001900 1 7 8 H X 225 NEW IN BOX
LALIQUE CRYSTAL FISH CACHET MENTHE MINT 3001900 1 7 8 H X 225 NEW IN BOX
$110.00
Time Remaining: 22d 17h 44m
Buy It Now for only: $110.00

Rare Crystal Clear Glass Fish Blowfish Heavy Josef Marcolin Sweden Signed Mint
Rare Crystal Clear Glass Fish Blowfish Heavy Josef Marcolin Sweden Signed Mint
$34.99
Time Remaining: 19d 50m
Buy It Now for only: $34.99

Baccarat Art Glass Crystal Fish Red With Engraved Signature
Baccarat Art Glass Crystal Fish Red With Engraved Signature
$88.99
Time Remaining: 23d 21h 46m
Buy It Now for only: $88.99

Lalique Fish Amber Crystal NO TAX
Lalique Fish Amber Crystal NO TAX
$121.63
Time Remaining: 19d 11h 33m
Buy It Now for only: $121.63

Lalique Fish Light Blue Crystal NO TAX
Lalique Fish Light Blue Crystal NO TAX
$121.63
Time Remaining: 15d 16h 13m
Buy It Now for only: $121.63

Crystal Angel Fish Sculpture Daum France
Crystal Angel Fish Sculpture Daum France
$205.00
Time Remaining: 7d 14h 52m
Buy It Now for only: $205.00

CLEAR CRYSTAL FISH 24 LEAD CRYSTAL MADE IN ITALY
CLEAR CRYSTAL FISH 24 LEAD CRYSTAL MADE IN ITALY
$10.00
Time Remaining: 26d 19h 23m
Buy It Now for only: $10.00

Lalique French Crystal Double Fish Deux Poissons Pisces Sculpture 175 lbs
Lalique French Crystal Double Fish Deux Poissons Pisces Sculpture 175 lbs
$2,495.00
Time Remaining: 24d 15h 9m
Buy It Now for only: $2,495.00

Spode Crystal Whale or Fish Paperweight Signed
Spode Crystal Whale or Fish Paperweight Signed
$15.00
Time Remaining: 15d 12h 30m
Buy It Now for only: $15.00

Steuben Crystal Whale Fish Figurine Paperweight Lloyd Atkins Mint
Steuben Crystal Whale Fish Figurine Paperweight Lloyd Atkins Mint
$297.97
Time Remaining: 21d 19h 32m
Buy It Now for only: $297.97

3x MOMA Saint Louis Lalique Paperweight Round Crystal Wheel  Dolphin Fish
3x MOMA Saint Louis Lalique Paperweight Round Crystal Wheel Dolphin Fish
$2.78
Time Remaining: 5d 11h 59m

Gerity Products Fish Bass Crystal Paperweight 1986 24K gp
Gerity Products Fish Bass Crystal Paperweight 1986 24K gp
$14.99
Time Remaining: 15d 23h 50m
Buy It Now for only: $14.99

Lalique Crystal Fish Perfect
Lalique Crystal Fish Perfect
$79.95
Time Remaining: 19d 21h 36m
Buy It Now for only: $79.95

Baccarat Crystal Fish Beautiful Detail Original Box
Baccarat Crystal Fish Beautiful Detail Original Box
$149.99
Time Remaining: 19d 16h 38m
Buy It Now for only: $149.99

LALIQUE CRYSTAL CLEAR FISH 3000000 BRAND NIB FRENCH WATER PARIS BARGAIN SAVE FS
LALIQUE CRYSTAL CLEAR FISH 3000000 BRAND NIB FRENCH WATER PARIS BARGAIN SAVE FS
$92.98
Time Remaining: 15d 15h 17m
Buy It Now for only: $92.98

ITALIAN MURANO CRYSTAL GLASS FISH FIGURINE HAND BLOWN DARK GREEN SWIRL  3 OF 3
ITALIAN MURANO CRYSTAL GLASS FISH FIGURINE HAND BLOWN DARK GREEN SWIRL 3 OF 3
$20.00
Time Remaining: 29d 19h 55m
Buy It Now for only: $20.00

Vintage Steuben American Crystal Fish Bud Vase Signed
Vintage Steuben American Crystal Fish Bud Vase Signed
$98.99
Time Remaining: 11d 21h 41m
Buy It Now for only: $98.99

LALIQUE CRYSTAL FISH SAPPHIRE 3000300 BRAND NIB WATER FRENCH BLUE BARGAIN F SH
LALIQUE CRYSTAL FISH SAPPHIRE 3000300 BRAND NIB WATER FRENCH BLUE BARGAIN F SH
$92.99
Time Remaining: 15d 13h 8m
Buy It Now for only: $92.99

LALIQUE CRYSTAL TURQUOISE FISH 3000500 BRAND NIB FRENCH WATER BARGAIN FREE SHIP
LALIQUE CRYSTAL TURQUOISE FISH 3000500 BRAND NIB FRENCH WATER BARGAIN FREE SHIP
$91.99
Time Remaining: 3d 14h 31m
Buy It Now for only: $91.99

Oleg Cassini Crystal Fat Fish Paperweight Seafoam Green NIB 3913S
Oleg Cassini Crystal Fat Fish Paperweight Seafoam Green NIB 3913S
$34.95
Time Remaining: 19d 15h 38m
Buy It Now for only: $34.95

DAUM crystal MINOS FISH Figurine
DAUM crystal MINOS FISH Figurine
$49.95
Time Remaining: 4d 14h 56m
Buy It Now for only: $49.95

Lalique Crystal Plate Fish Border
Lalique Crystal Plate Fish Border
$789.99
Time Remaining: 13d 7h 9m
Buy It Now for only: $789.99

SWEDISH CRYSTAL ETCHED GLASS FISH VASE 3 TALL SIGNED  numbered Bellander
SWEDISH CRYSTAL ETCHED GLASS FISH VASE 3 TALL SIGNED numbered Bellander
$24.99
Time Remaining: 19d 21h 26m
Buy It Now for only: $24.99

Rare Lalique Opal Fish Frosted Crystal Art Glass Figurine 25 long
Rare Lalique Opal Fish Frosted Crystal Art Glass Figurine 25 long
$285.00
Time Remaining: 27d 23h 25m
Buy It Now for only: $285.00

Lalique Crystal Deux Poissons Double Fish Sculpture Signed Authentic Mint
Lalique Crystal Deux Poissons Double Fish Sculpture Signed Authentic Mint
$1,848.00
Time Remaining: 27d 14h 15m
Buy It Now for only: $1,848.00

LALIQUE CRYSTAL 3001900 FISH MINT GREEN BRAND NIB FRENCH WATER SAVE FREE SH
LALIQUE CRYSTAL 3001900 FISH MINT GREEN BRAND NIB FRENCH WATER SAVE FREE SH
$92.99
Time Remaining: 5d 21h 18m
Buy It Now for only: $92.99

Spode WHALE FISH Crystal Glass Art Sculpture Statue Figurine Paperweight Vintage
Spode WHALE FISH Crystal Glass Art Sculpture Statue Figurine Paperweight Vintage
$9.99
Time Remaining: 11d 8h 42m
Buy It Now for only: $9.99

LALIQUE GOLD LUSTER CRYSTAL FISH BRAND NEW IN BOX 10543400 SHINNY SAVE F SH
LALIQUE GOLD LUSTER CRYSTAL FISH BRAND NEW IN BOX 10543400 SHINNY SAVE F SH
$94.99
Time Remaining: 11d 19h 31m
Buy It Now for only: $94.99

LALIQUE CRYSTAL FISH PINK 3002800 BRAND NIB OCEAN WATER FRENCH PARIS SAVE F SH
LALIQUE CRYSTAL FISH PINK 3002800 BRAND NIB OCEAN WATER FRENCH PARIS SAVE F SH
$92.99
Time Remaining: 13d 10h 23m
Buy It Now for only: $92.99

LALIQUE CRYSTAL FISH ANTIINEA GREEN 3001200 BRAND NIB FRENCH WATER SAVE F SH
LALIQUE CRYSTAL FISH ANTIINEA GREEN 3001200 BRAND NIB FRENCH WATER SAVE F SH
$92.99
Time Remaining: 7d 12h 29m
Buy It Now for only: $92.99

LALIQUE CRYSTAL GOLD FISH 3002900 BRAND NIB WATER FRENCH OCEAN PARIS SAVE F SH
LALIQUE CRYSTAL GOLD FISH 3002900 BRAND NIB WATER FRENCH OCEAN PARIS SAVE F SH
$92.99
Time Remaining: 17d 22m
Buy It Now for only: $92.99

LALIQUE CRYSTAL FISH FUCHSIA 3003400 BRAND NIB WATER FRENCH CUTE BARGAIN F SHIP
LALIQUE CRYSTAL FISH FUCHSIA 3003400 BRAND NIB WATER FRENCH CUTE BARGAIN F SHIP
$92.99
Time Remaining: 25d 13h 45m
Buy It Now for only: $92.99

Lalique Crystal Antinea Fish Figurine Sculpture With Box Green
Lalique Crystal Antinea Fish Figurine Sculpture With Box Green
$99.95
Time Remaining: 9d 15h 19m
Buy It Now for only: $99.95

RARE VINTAGE DAUM CRYSTAL FISH PATE DE VERRE  CLEAR EGG CLOCK 4 1 4 MINT
RARE VINTAGE DAUM CRYSTAL FISH PATE DE VERRE CLEAR EGG CLOCK 4 1 4 MINT
$359.99
Time Remaining: 25d 15h 41m
Buy It Now for only: $359.99

Vintage Scandinavian Etched Fish  Fishnet Crystal 95 Glass Slant Vase Signed
Vintage Scandinavian Etched Fish Fishnet Crystal 95 Glass Slant Vase Signed
$79.00
Time Remaining: 19h 27m
Buy It Now for only: $79.00

Lalique Crystal Damsel Blue Sapphire Fish Figurine
Lalique Crystal Damsel Blue Sapphire Fish Figurine
$129.99
Time Remaining: 27d 16h 18m
Buy It Now for only: $129.99

Lalique Crystal Fish Perfect
Lalique Crystal Fish Perfect
$79.95
Time Remaining: 4d 13h 27m
Buy It Now for only: $79.95

Lalique Crystal Fish Perfect
Lalique Crystal Fish Perfect
$79.89
Time Remaining: 17d 13h 24m
Buy It Now for only: $79.89

Green Crystal Baccarat Fish Figurine w Box
Green Crystal Baccarat Fish Figurine w Box
$195.00
Time Remaining: 11d 17h 10m
Buy It Now for only: $195.00

LALIQUE CRYSTAL SERVING PLATTER WITH FISH EDGE
LALIQUE CRYSTAL SERVING PLATTER WITH FISH EDGE
$224.99
Time Remaining: 4d 17h 50m
Buy It Now for only: $224.99

Art Glass Crystal Sea Fish American Eagle Figurine Sculpture
Art Glass Crystal Sea Fish American Eagle Figurine Sculpture
$45.00
Time Remaining: 3d 18h 50m
Buy It Now for only: $45.00

Lalique Crystal Fish Figurine Grey
Lalique Crystal Fish Figurine Grey
$88.00
Time Remaining: 12d 14h 24m
Buy It Now for only: $88.00

Mats Jonasson Crystal Coral Fish Collectors Piece Signed Numbered Sweden
Mats Jonasson Crystal Coral Fish Collectors Piece Signed Numbered Sweden
$125.00
Time Remaining: 25d 7h 7m
Buy It Now for only: $125.00

Baccarat Art Glass Crystal Fish Green Mint Condition
Baccarat Art Glass Crystal Fish Green Mint Condition
$89.99
Time Remaining: 3d 23h 34m
Buy It Now for only: $89.99

Baccarat Art Glass Crystal Fish Clear Mint Condition
Baccarat Art Glass Crystal Fish Clear Mint Condition
$89.99
Time Remaining: 3d 23h 38m
Buy It Now for only: $89.99

Turkish Crystal Tropical Fish Figurine
Turkish Crystal Tropical Fish Figurine
$29.70
Time Remaining: 16d 12h 7m
Buy It Now for only: $29.70

Blenko Assorted Frit Crystal Fish 2916 1
Blenko Assorted Frit Crystal Fish 2916 1
$213.56
Time Remaining: 13d 15h 29m
Buy It Now for only: $213.56

LALIQUE CRYSTAL KOI CONCORNEAU FROSTED FISH BOWL DISH ASHTRAY MADE IN FRANCE
LALIQUE CRYSTAL KOI CONCORNEAU FROSTED FISH BOWL DISH ASHTRAY MADE IN FRANCE
$194.99
Time Remaining: 15d 17h 43m
Buy It Now for only: $194.99

Lalique Crystal Gold Yellow Damsel Fish Figurine With Box
Lalique Crystal Gold Yellow Damsel Fish Figurine With Box
$129.99
Time Remaining: 27d 16h 25m
Buy It Now for only: $129.99



Let's Play Pokemon Crystal: Part 32~Victory Fish Fillet!





Fish Crystal

Is it safe to put a crystal in a cichlid aquarium?

I am into crystals and find they bring me good luck, I have a small crystal I would like to put it in my tank to bring my fish luck. I know certain types of rocks put off chemicals and can change ph levels and such.

Sure you can. Most rock is totally safe for an aquarium. Make sure it's not salt and then test it with a few drops of vinegar. If it fizzes it's not good for an aquarium, otherwise go right ahead.

MM

Fish Crystal