Is my tank full?

[Cameron]

I haven't been online in a while, but i have a few questions... 1st of all i think my tank is cycled after my 20% water change (30gal tank) the nitrates were at 0 and nitrites were 0.5ppm, and also i have 7 neon tetras, 4 serpaes, 5 flame tetras, and an algae eater, is my tank pretty much filled??

[freshwaterfishlover]

I would say you could add 2 more 3" fish and then it would be max.

[zackish]

What kind of filtration do you have?
And I hope you mixed up your nitrites and nitrates because .5 nitrites isn't that good. There should be 0 ammonia and 0 nitrites in a fully cycled tank.

[Lady Hobbs]

Your tank is not cycled as long as you have nitrites. Add no more fish until you have a finished cycle. Ammonia 0, Nitrites 0 and a lot of nitrates. Do a large water change and then you have a cycled tank that is safe to add more fish.

What are you showing for ammonia?

[Cameron]

I had my nitrites and nitrates messed up... so i can get like 2 more serpaes, hopefully to help their fin snipping!!

[freshwaterfishlover]

2 more Serpaes Yes. Then you will be maxed.

[Cameron]

also my filter is a whisper 30

[zackish]

also my filter is a whisper 30
How big is your tank?

[Fishguy2727]

I would add more filtration. You want to total about 60 gallons worth of filtration.

As far as stocking, you may be overstocked, you may have a lot more room, this depends on your water change schedule. What is your water change schedule?

[Zerileous]

I would add more filtration.

YES. The problem is that right now you are trying to run maximal stocking with minimal filtration. It could work for a long time, but its just posing a rather heavy risk of a crash. There will be alot less forgiveness for missed water changes and other problems. If you add another HOB or even an internal filter, or better yet a cannister you will be in better shape.