fish addition

Manuel935 · May 5, 2020

I recently bought a 210 gallon tank and cycled it, I bought it as an upgrade to my 75 gallon, i was wondering considering its already cycled and all if I put the old rock in the new tank if I can just transfer all my old fish over. If not I can do it little by little but just asking for different opinions.

KristyThao · May 5, 2020

Since it’s cycled it should be fine to start adding fish in there but also depends on your fish load. If you didn’t overstock your 75 then the fish load should be okay transferring into a 210 imo.

Big G · May 5, 2020

Heck yeah. Move some of the rock, sand, and water over to the new tank.

Manuel935 · May 5, 2020

Big G said:
Heck yeah. Move some of the rock, sand, and water over to the new tank.

I added new sand to the tank so i wont be moving the old one, but I have 70 pounds of rock so Ill definitely get to it this weekend.

Auquanut · May 6, 2020

Do you have corals on the rock in the 75?

Oscar’s25Gal · May 6, 2020

Manuel935 said:
I recently bought a 210 gallon tank and cycled it, I bought it as an upgrade to my 75 gallon, i was wondering considering its already cycled and all if I put the old rock in the new tank if I can just transfer all my old fish over. If not I can do it little by little but just asking for different opinions.

You should be able to transfer all of the fish if the 210 is fully cycled, however you might want to do it slowly, so if you had 6 fish you could do 3 this week and 3 the next, just so that you don't shock the bacteria in the tank. Otherwise you may get ammonia spikes.

Manuel935 · May 7, 2020

Auquanut said:
Do you have corals on the rock in the 75?

no corals in the 75, I hadnt had the chance to add them yet before I decided to upgrade.

Manuel935 · May 7, 2020

Oscar’s25Gal said:
You should be able to transfer all of the fish if the 210 is fully cycled, however you might want to do it slowly, so if you had 6 fish you could do 3 this week and 3 the next, just so that you don't shock the bacteria in the tank. Otherwise you may get ammonia spikes.

yeah i agree, plus these fish mean a lot to me as I have put in a lot of work to make sure they are always healthy, and I really have no hurry to transfer them. Ill do it slowly.