Help!!!! DWC ISSUES!!!!

[Mañ'O'Green]

Yes it is. Their Calmag is also quite brown. The brownest I’ve ever used actually, and I’ve used a few different brands over the years. It also has a dirt-like smell and so does the micro nutrient.

That totally explains the brown.

Do you have a small air-gap between the bottom of the net pot and the top of the water in the reservoir?

 

[Daipot]

That totally explains the brown.

Do you have a small air-gap between the bottom of the net pot and the top of the water in the reservoir?

yes I’ve left a gap. The gap was about 3-4 inches tonight tho bit ive topped it up to just over an inch below each net.