PVC overflow

[troni]

i dunno what its called but no only one drain for now

[reefwars]

never choke your drain with anything unless you have an emergency drain so are you using a durso like this??:






or just a standpipe??



or do you have nothing in your overflow box but the bulkhead itself??

[troni]

i dont know what type i have so i tried the cap with a hole but still very loud so harvey at MA suggestted using a air valve to get the correct intake so i might try that when i can get to a store.

anyway i attched pictures of what i have inside and out of tank on top of stand. under it goes straight down to below water level.

[RDNanoGuy]

The hole in the cap is way too big. Start with your smallest drill bit and keep enlarging it till the siphon is working properly. Or you could use a needle valve to dial in the right amount of air.

[troni]

i think im going to try needle valve. wont i need the whistling affect still?
what about raising the the end in the sump to above water level?

[troni]

so i put tape over it and its not gluging anymore.
but now where it drains its loud but i think i need to cut it shorter so i can add the drain top so no snails can get in and that might fix it.

[troni]

so i havent done that yet but my next problem is after the tape. my siphon is breaking? anyone?