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Tigercub79
02-15-2019, 06:43 PM
Hi guys! I need some advice on when itís safe to add new fish. Let me give you some background first. Ive had a fully cycled 10 gal aquarium since August 2018. I got a new 36 gal tank in December, hoping to transition most of whatís in the 10 over to the 36. I ran the new filter alongside the old filter in my 10 gal for 6 weeks. I also moved most of the gravel and decorations from the 10 to the 36. One week ago I finally moved the new filter and most of the fish over to the new tank. Iíve been monitoring water conditions frequently. Iím consistently getting readings of 0 ammonia and 0 nitrite in the new tank. The nitrate has gone from about 5 to 10 this past week since the addition of the fish. Do you think there will be any ammonia or nitrite spike, or do you think itís safe to begin adding new fish? Currently, there are 3 mollies, 3 cories, and 1 mystery snail. Please advise. Iím anxious to add some new fish, but I donít want to jump the gun.

Slaphppy7
02-15-2019, 07:07 PM
Sure, you can begin adding fish...I would go gradually, and check params as you go

Boundava
02-15-2019, 08:58 PM
Agree with above, gradual so you allow the bacteria to meet the demand (waste produced) by your new fish. Congrats on your upgrade, are you keeping the 10 running as a possible QT tank?

Tigercub79
02-15-2019, 09:21 PM
I’m keeping the 10g up and running for my betta. I’m thinking about adding a small group of schooling/shoaling fish to the 36g as well as 1-2 “showpiece” fish. Any suggestions?

SueD
02-15-2019, 10:06 PM
With only 3 mollies and 3 cories in there you have plenty of room for additional stock. But as the others said, go slowly. I would definitely plan on adding 3 more cories of the same species you have, but maybe leave them to the end. Are the mollies breeding or are they all one sex?

Tigercub79
02-15-2019, 10:18 PM
My mollies are all females. Any suggestions on schooling or “showpiece” fish to get along well with mollies and cories? I was really hoping to get 1-2 angelfish.

Tigercub79
02-20-2019, 01:00 AM
Thanks for the input, guys! I got 3 young angels over the weekend. I couldn’t be happier. They’re beautiful fish!!57261

Tigercub79
02-20-2019, 01:01 AM
So far, my ammonia and nitrites are holding at 0. Nitrates are in the 10-20 range.

Slaphppy7
02-20-2019, 02:39 AM
Congrats on your new fish, well done

Keep an eye on water params the next few days, to ensure the cycle supports the new bioload

RiversGirl
02-20-2019, 02:55 AM
Congrats on your new fish. You've had a very nice upgrade from the 10. Your 10 is a lovely home for your betta, as well. Well done!

Boundava
02-20-2019, 06:33 PM
Another congrats from me, the angels are very pretty.