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Discussion Starter #1
Can someone tell me if I am overstock. I have a 20 gallon freshwater tank with plastic plants and decorations, 1 30g whisper, 1 curtain air bubbles
1 platy
6 guppies
4 corys
2 red claw crabs (have a home made habitat, so they can breath)
1 blue crayfish
2 dwarf gourami
I test the water every 3 days with the API test kit, and everything seems normal, the ammonia, nitrates, and ph levels are ok. I change the water 15% every week temperature is at 77/78. I put the recommended amount of salt, and stress coat. Everything seems to be ok, no fish died yet, some have been in the tank for 3 weeks now. Should I worry, they all seem to be doing good.
 

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I don't think cories do well with salt at any level.
 
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Thanks for the input I will fix the water right away. But is my tank overcrowded?
Fish wise, you should be OK with good maintenance (weekly partial water change of 1/3 to 1/2 the tank, not overfeeding, etc). It is the crustaceans and their impact that I can't assess, as I have no experience with these. I have read that one should not have crabs and crawfish in with fish, but I've no idea how they otherwise affect the water.
 

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Fish wise, you should be OK with good maintenance (weekly partial water change of 1/3 to 1/2 the tank, not overfeeding, etc). It is the crustaceans and their impact that I can't assess, as I have no experience with these. I have read that one should not have crabs and crawfish in with fish, but I've no idea how they otherwise affect the water.
thanks for the info, so far the crayfish and the crab are getting along with each other and the other fishes. I they get too close to each other they go the other direction.
 

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The cray will likely turn on your fish eventually same with the crabs as well. The crabs need land but also need a source of brackish water, without these they usually will not last half a year. Neither are suitable for a community tank.

Fish wise you are fine. The inverts really need to be removed.
 

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Welcome to the forum

As someone who has kept crayfish with fish for several years, I am certain that the crayfish will eventually eat all the fish in your tank. One must really consider the nature, behavior and attitude when choosing fish to live with a crayfish, and unfortunately the fish you have are just extremely easy targets, especially in a 20 gallon tank.

I would absolutely return the crayfish.

I can't say anything about the crabs - never kept them, don't intend to ever keep them, don't know a thing about them.
 

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Yep, as a few said the crayfish will not work in there. I have two blue crayfish right now and I don't even trust the female with my own hand and certainly not with almost any fish. I am guessing you bought it very little as a baby?? For good idea of how big they get( and mean) my female is roughly 8month-1yr and here she is and still growing very fast
sorry it's blurry..just took it now a (little too fast) so you can get accurate recent pics


those claws are about the length of my index finger and she is not waving hello right here lol
 
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