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White foam in dwc res?


New Member
Hi guys, check my res tonight and noticed some white foam/bubbles around the edge.

Yesterday was the first day I used General Organics-CaMg. wondering if this will cause an issue? I'm thinking about changing my res tomorrow and ditching the CaMg.

Any thoughts/ideas?

Thanks guys, :thanks:



New Member
I should have mentioned my other nutes. Im using BPN's 3 Part elite with liquid blue. res ph 5.6 temp 21C. using purified bottled water from a store.


New Member
im not familiar with those brands... but, as far as i know, you dont want to use organics in your dwc.

just strictly hydro nutes..

you want your res water to be nice and clean.
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