I am finally getting my 29 gal
tank running with the HOB
overflow. I ditched the Rio pump and got a Mag 5 from captivereefs. The computer room is quiet again!
Now I am working on the water sound. I constructed a durso pipe from 1" pvc
fittings just like on his website. He says to use 1.25" but that would not fit in my overflow box. The drain line is 1" as well.
The first attempt had the tank filling faster than the drain. I adjusted it a bit and seemed to have it working. Then the water in the overflow box started fluctuating up and down. I took the cap off the top and it fixed that but the water level was a little higher than I wanted. I noticed that with the cap on(with the small hole drilled), the water level was good but over time it would go up and down. With the cap off the levels stayed steady but was a bit high.
I ended up making the hole just a bit bigger and all seems ok but I worry about "something" changing and the tank overflowing. I do not have anything glued at this point.
Does what I am describing seem right and normal?
Thanks for the help.