I am thinking of putting a timer relay on my filter pumps that will automatically switch the pumps back on after a set amount of time. I used them on my reef tanks to make it easier to feed. Basically, you push a momentary switch and that stops power to the pumps for a selectable period of time. I used one with a delay set to 5 minutes. I would push the switch, the pumps would shut off, I would feed the fish/inverts and the pump would switch back on after the 5 minutes were up. Pretty simple to make and was helpful.

My current tank has mostly rainbows and cories and the rainbows keep pigging out to the detriment of the cories. Waking up just before dawn and feeding the cories with sinking food works but getting up that early is no fun and the flow from the pumps sprays the food all over the tank.

Dan

I have not used one for that but if a short time is all that you need, this might be one to cover you for up to ten minutes?

https://www.grainger.com/product/ICM-Relay-4E233?s_pp=false&picUrl=//static.grainger.com/rp/s/is/image/Grainger/4E233_AS01?$smthumb$

A momentary switch of your choice to interrupt the power and then after the set time return the power?

Plantedrich, that seems like a pretty good solution, have you used it in the past?

Sounds similar to the thread I had on this very subject. I just got rid of the sump and problem solved. I've not had the problem with food with HOB filters as I did with the sump.