Sump overflow and run dry, what am I missing

john-c

Outlet is plugged
New 40mm pipe running from the top of the tank
Added inside piping with one that runs along the bottom with slits in it
Added a snorkel on the syphon
Pump is on full

It now appears to be fine. The sump is going up and down, but its keeping within a 5-10 cm range between cycles.
The grow bed is cycling fairly frequently but at least the entire tank will flow through each hour.

The only other thing I think is upgrading the syphon. I think it is a bit slow but it will do for now.

Thanks for all the help everyone.

Mel Redcap

Excellent! Glad it's all working fine.

zimbo

john-c wrote:

I have upgraded my system with new growbed, a 1000L IBC and a sump.
The growbeds are fed by gravity from the IBC. The bed uses a bell syphon to the sump.

The issue I am having is getting the flow rate in the sump correct.

I am adjusting the flow rate into the bed and the flow rate from the pump to try and get it even, but I have had the sump overflow, and also run dry.
When it overflows, its holding multiple flood and drain cycles.
When it goes dry its pumping out too fast.

I saw one person use an overflow pipe from the top of the tank into the sump.
I was also thinking about changing the pump to a automatic sump pump.

Is there a best option for this, or am I overlooking something?

Looks to me quite simple your siphon is breathing at the top the auction holes should come from the bottom.

Sent from my iPhone using Tapatalk

scotty435

Hmm, that made absolutely no sense zimbo. Auto-correct or bot that is the question? Looks like a victim of auto-correct :thumbright:

Yavimaya

nope, typo, he meant suction holes, A is next to S.

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Sump overflow and run dry, what am I missing

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