cory cat substrate

[LobsterParty000]

Either way, whatever you do, just remember that your tank needs to maintain that biological filtration that your current gravel provide, and removing it could be dangerous to the health of your tank.

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[fish wrangler]

Because yiu don't have a UGF there is very little BB in the gravel. Changing all of it at once will not affect the nitrogen cycle because most of the BB is in the filter. If you are afraid of a mini cycle you can fill mesh bags with some of the gravel until the BB gets established, but this is not necessary.

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[IcU_LQQKn]

Does anyone have experience with cory cats on Black Diamond Blasting sand?

 

[LobsterParty000]

I dont, but ive seen videos and they look super happy

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[Coursair]

I dont have any knowledge on this, but ising basic knowledge, u could probably scoop out some of the rocks from the top layer, take the decorations out, remove the fish, and pour a top layer of sand, let it cycle for a couple more days and let it settle, then add decor. And fish.

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As was said earlier, the sand will sink below the rocks. And will clog an internal filter if it sits on the bottom.


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[Coursair]

no i have an internl filter that hangs on the side into the tank..a tetra whisper 40 i think

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If the filter intake is not sitting on the bottom, you may be ok.

Otherwise, consider switching to an HOB or Canister filter.


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[Coursair]

Does anyone have experience with cory cats on Black Diamond Blasting sand?

Yes.
Worked fine. I had C habrosus
Used a cheap HOB filter with a foam prefilter over the intake to keep sand out and save my baby Shrimp


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[Coursair]

is this gravel to sharp for small cories?

The gravel is ok. Not great, but ok.
This is why we like sand
http://youtu.be/tPOvOije4vQ


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