Does the tank just need more water?

Baronen · Sep 8, 2023

Sorry never had a sump before. Tank is Red Sea reefer 350. I don’t want to put in too much water and any time I do it drains back down to the base of the collection cup and air is getting sucked in

Baronen · Sep 8, 2023

Yeah no matter how much water is in the tank/sump it drains to where the collection cup meets the inflow pipe

fishski13 · Sep 8, 2023

did you create a siphon with your drain line?

Baronen · Sep 8, 2023

fishski13 said:
did you create a siphon with your drain line?

Ahh I think I was opening the valve too quickly and losing my siphon? I did it slower this time and it seems to be level

NYCBOB · Sep 9, 2023

you need to close the valve a bit more. water is flowing down too fast. adjust the round knob a little at a time and wait 10-15 minutes between adjustment.

Baronen · Sep 12, 2023

alright so I turned the return off for the first time and it drained all the way down to the collection cup. I turned on the return and now it’s doing the same thing. Something’s gotta be wrong here, you shouldn’t have to do these adjustments any time you turn off the return please help

1112-425XL · Sep 12, 2023

I have Red sea 425xl and it is just fine tuning. As mentioned above, you have to wait a few minutes between minor adjustments. Once you get it right you won't have to adjust every time you shut off the return. Make sure there is enough water in the return chamber.

Baronen · Sep 12, 2023

1112-425XL said:
I have Red sea 425xl and it is just fine tuning. As mentioned above, you have to wait a few minutes between minor adjustments. Once you get it right you won't have to adjust every time you shut off the return. Make sure there is enough water in the return chamber.

It was running perfectly until I turned off the return. I turned it back on and it started sucking up air and then the overflow drained to the base of the cup and the whole process of fine tuning it needed to be done again. Anything I am doing wrong??