I've got a 20 gallon long with 2 guppys, 5 neon tetras and some ghost shrimp. This tank has been set up for 4 months now. There are 2 amazon swords, 2 Aponogeton (Grew from bulb), 2 onion(grew from bulb) and 1 anubius plant. I put some root tabs under the plants when I switched from gravel...