Fish water level

[Pencolamale]

I drill 4 round opposing holes starting just 1/4" from the bottom of the bell. I use the same size standpipe as the return tube. The suction of the water going down the standpipe creates the draw. The round holes break the siphon. Half holes don't work for me. I am not an engineer, I just know that I have six of them running flawlessly. Pictures of mine are in my thread, rfeiller outdoor garden construction.
You notice I don't have a photo in my avatar either, I have little patience for jacking around with that stuff.

I have a question. My water chemistry is fine, however my Goldfish keep dying at about 1 to 3 per day. I have a 220 gal tank, a bio-filter, sump tank, and 2 float beds and a flood and drain gravel bed. The Aquaponics quru down the road came by and said he thought my system was great and well thought out and to get it going with Goldfish. I stated with 30. After about 1/2 died I got the water tested, all was fine so I added 20 more larger Goldfish. Same result. Good aeration, added a water heater as it's winter now. I was feeding them twice a day but was told Goldfish should only be fed once a day. Still dying. Any ideas? Thks.

[Oliver]

Pencolamale,

Please do not hijack someone else's thread. You have even changed the name.

If you wish to change the topic from quietlike's "Fish water level" then find the appropiate place and start your own thread.

Oliver