yes,they are being hurt internally, read up on stunting.if you really love goldfish you would look out for their well being instead of your own entertainment.
Did you get your RODI bought and set up?
Really no functional difference between a capillary tube type restrictor and a cartridge type restrictor. In fact, if you take apart a cartridge type,
Wow Russ thanks for those labeled pics like that. Helps a bunch! I was getting confused because what I thought was the flow restrictor is actually the
I have the drop to check PH and the chart. I dosed the prime accurately, yes and it was still bad. I had it set up for 8 months rechecking everything.