The tubs have been doing well this summer. Breeding as can be expected. At the start of summer I had very few plants in and as a result, very few fry. I added water hyacinth and the babies duid really well. Later i dropped some guppy grass in a few ponds and it did well.
I had to add shade cloth as the Taiwanese sun was beating down relentlessly. That too helped.
To make water additions easier, i took an old garden hose that was hardening. Made a few holes that matched up to the tubs then added air valves. Now to change water or top up i simply open a faucet and all tubs get freshwater. I leave it on about 10-15 mins, once or twice a week and that has been enough since the rain also helps "change" water.
The full tubs overflow onto the ground and the water flows out of drains. no mess no fuss.
The hyancinth has been a hit and miss. Some tubs had it growing large, others never really took off.
The hillbilly water change system. It ain't pretty but it works and cost 0$ as I had everything I needed.
The blooms are so nice. 2 tubs regularly have blooms.