3.5 gal tank 6 marine hermit crabs. Get salt water & sand from where we got the crabs. Every 2 wks my sand turns black. If i don't change w/I 2 days, crabs die & kids cry. I have to redo the whole tank. What's the problem?
Crabs McJones
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Welcome to R2R! Sorry to hear about your troubles. We'll definitely try to help. Can you post pictures of the issue? Also is the sand and water wild collected or from a fish store?
SPR1968
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How old is the tank and has it been cycled? As above pictures might help as well
And Welcome to R2R!!!
And Welcome to R2R!!!
mike werner
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Welcome!Like Crabs and SPR1968 said post some pics and some parameters and we will get ya help.
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The Aquatic Arsenal
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Welcome to R2R!!!
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Welcome to r2r! +1 to pics and info.
Retro Reefer
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Welcome to R2R! Your sand is probably turning black from the high organic content and lack of oxygen and sufficient flow in your tank.. I would use store bought sand for aquariums.
dbl
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Welcome to R2R and your new reefing family.
Howdy
Sounds like your tank is creating ammonia from dead stuff in the sand.
Do you have any rock or filtration?
Are you doing water changes?
If so how much and how often?
Sounds like your tank is creating ammonia from dead stuff in the sand.
Do you have any rock or filtration?
Are you doing water changes?
If so how much and how often?
