It's a good thing the Tilapia tanks have big valves on the bottom, as the fish get bigger, it's going to require a bigger / more often, water changes... I have an adaptor made that goes from the 2" drain valve, down to a garden hose fitting... I'll use that to "fish water" the plants I've been trying to do that for, instead of bucketing the water to them...
also good that I have a hot & cold freeze proof blending faucet out by the tanks, so I can fill off of it, & have well water with no chlorine... I've been able to match the 87-88 degree water going into the tanks...
I found a use for that pair of marineland inside the tank canister filters that I bought early on, & found too unsightly to use, in my other aquariums... they are working nicely to cycle the water... both tanks are 1/2 full right now to press everything together, while the adhesive cures..., & until I get some substrate, heaters, & a divider into the top tank... the bottom tank will use 4 of the biggest foam filters I could find, 1 in each corner ( rated for up to 70 gallons each ) the top tank will eventually have a pair of bigger hang on the back filters, one on each side of the divider... I'm wanting to get these tanks going... I will probably go outside my comfort zone, & do a fishless cycling, for the top tank, once the filters come, as 3-4 6" fish will be going in as soon as I sex them, after the tanks are ready... top tank will hold & separate the fish, until they are moved to the lower tank for spawning, after which the male will move back to his side of the top tank, & once the fry start eating, & I can get them out of the mothers mouths, the females will be moved back to their side of the top tank... the supplier I bought the original fingerlings / (I'd have called them fry ) from, highly recommends Zeigler's Algae wafers for feeding fry, & I have a bag of those here, even though I hope to start spawning mid winter, & have the fingerlings ready to go outside next spring, when I can maintain the correct temperatures