calcium carbonate and potassium carbonate

[GaryD]

Hi Ian,

.....and I'm trying 10 Sleepy Cod in the sump (bathtub) as an experiment... they seem ok so far.

Make sure that the bathtub is covered. These so-called sleepy fish can jump like pole vaulters. Everyone that I know who keeps them has had losses due to jumping out of the tank. Ausyfish keep their fingerlings in a large tank with plenty of freeboard for this very reason.


Gary

[Outbackozzie]

It's usually a bully fish chasing a smaller one over the edge too. I am going to get some this year once the weather warms up.

[Dufflight]

They have a long grow out so I'd like to give them a go as well. And koi if I can find some.

[Ianc]

Hi Ian,

Make sure that the bathtub is covered. These so-called sleepy fish can jump like pole vaulters. Everyone that I know who keeps them has had losses due to jumping out of the tank. Ausyfish keep their fingerlings in a large tank with plenty of freeboard for this very reason.

Gary

Thanks Gary. I've covered 3/4 with a galv. tray to keep light out to reduce the algae, and the rest I've covered with a wooden frame covered with aluminium fly wire. Seems to be working ok.
Ian

[Privatteer]

Cuttlebone is primary aragonite= natural crystal form of calcium carbonate, CaCO3.

Been trialling it in a small pond for slow buffering with no issues beyond having to watch the salt content of fresh stuff. Lucky for me it only takes 30mins on the beach to get a shopping bag full. Crush a few pieces and throwing the rest in bottom of a trickle filter.

Only time I have heard of an problem was store brought that had been bleached. Be glad to know if anyone else is using it on larger systems.