Like others as post on Facebook site. They say that you can never have too much foliage. The more the marrier. Is this true. I wouldnt think chams would get enough uvb light and live plants would die from being too crowded.
Try unhooking the line to the nozzles at the pump and let water run out. And of course have a pan. Then once water is draining then hook it back up and turn it to on. Thats what i did when i was having problems.