No, I’m not adding any more tanks. However, the new stand I just built will only accommodate two 20g long tanks. I have three up and running. The just finished stand holds one tank (at the moment), and I have a store bought metal stand currently holding the other two.
The metal stand works great but it’s too low, specifically the shelf for the bottom tank, which is just inches off the ground. It’s impossible to gravity drain that tank. I do use a python hose, but not to regularly vacuum/drain my tanks. See this post on what I normally use to clean/drain my tanks. I don’t like wasting water, which is what the Python does when running the faucet to create suction. For tanks that are higher than my utility sink, I will sometimes use the Python just as a drain. If you don’t have good water pressure, the Python doesn’t work as well as a substrate vacuum. It doesn’t work at all if you’re relying just on gravity, and the tank you’re draining is lower than the drain end of the Python hose.
Anyway, because my new stand will only hold two 20g tanks and I’m wanting to replace the metal stand, another stand is in order. Therefore, build number 2 is underway. I’m following the same plan as the last one, except I’m making it a bit longer. In my infinite wisdom, I made the distance between the legs on the first stand about 1/2″ short of allowing me to slide a 20g tank in straight away on the 2nd shelf. Thus, I have to put it in at a bit of an angle. It will fit width-wise between the back legs and front legs but won’t slide straight in between the front legs. Ugh! Not sure how I botched that.
This 2nd stand will be 4″ longer at 44″. Also, I’m not using 4x4s as legs as I did in the first one. Instead, I’m using two 2x4s bolted together for each leg (= eight total 2x4s for the legs). I’ll post photos of it shortly.