Tank size is limited only by plant species. I tried searching for this "coffee pot" planted tank but I couldn't find it. Someone made a planted tank out of a coffee pot assembly, with the lights placed where the coffee filter usually is. All you need really is water, light, adequate heat and nutrients and plants should grow.
Looking good as usual gf225. Too bad that lotus won't start growing again. I know how it is, mine has sortof taken a break. I used to have 7 big leaves between the main plant and it's runner but now I've only 4. Tried dosing KSO4 and KNO3 and micros but to no avail. Perhaps they need down-times like apons.