I recently acquired a 20 gallon tank, and planted it.
My tank is now cycled and ready for fish! I went and bought 4 harlequin rasboras today, but was wondering how many fish I could put in there.
Currently my tank population is:
4 Harlequin Rasbora
3 Zebra Nerite
3 (As far as I know) Malaysian Trumpet Snails
I found one pond snail hitch-hiker that I immediately eradicated a few days ago, have not seen anymore yet, but who is to say if they are there or not. :P
8 Java Ferns
10 or so Vallisneria
2 Anubias Nana
4 or 5 gold ball clumps of java moss
My substrate is ~3 inches (it has hills and valleys) of pool filter sand.
My pH is steady around 6.8 (my tap pH is <= 6.0, but I put a Tufa rock in my tank..I only ever do 25% max water changes, and my pH sometimes dips slightly afterwards, but quickly goes back up to 6.8). I also am supplementing my snails calcium diets with the occasional algae wafer or leaf of kale/spinach.
Temperature is steady around 78f.
I want to put in as follows:
2 more Harlequin Rasbora (didn't want to add all 6 at a time) (for the top of the tank)
6 cardinal tetras (for mid-range)
Maybe one or two more nerites (probably tigers instead of zebras, to add some variety)
I also wanted to get some Amano shrimp, and some bristlenose catfish. What I am wondering is if my bottom layer (Shrimp, catfish, snails) will be too overstocked, or if my tank is overstocked in general...or if it is under stocked! Also, how many shrimp/catfish should I add?
Any other questions for me, let me know!