Added substrate in the Caridina tanks today, and Friday put a new bag of Flourite split between the 2 Neo tanks.
The dusty ones nearest camera are the Caridina ones. The second two are remarkably clear already. I rinsed Flourite until I thought I'd lost half of the bag's weight and it still clouded up both tanks. But 48 hours later and crystal clear water. Thinking of leaving the lights on 24/7 to grow more green and less brown. Will move some plants to them when I get lighting sorted. I think the T5's over the Caridina tanks will grow low light stuff fine. The other two need a strip. And I have tanks at home running 24" cheapo Finnex lights that I could use on these and replace them on their current tanks with something a little better. Those new Fluval 3.0's have definitely caught my eye since the latest update.