so this is my third go at growing. Using a 600W HPS and a Mars Hydro SP3000 in my 6X6 grow area. Have had two successful grows so far with the second being better than the first. during my last grow I had posted a problem on this site and I was given a feeding chart and told I was under feeding significantly (I was told I was doing about 1/2 of what I should). So for this new grow I started using the new feed chart I was given. (See image) I am using an undercurrent recirculating Hydro system and have a large airstone in each grow bin as well. between the the airstone and the recirculating water pump I get tons of bubbles and Oxygen in my bins.
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The girls are 30 days old today from Germ. so I am using the week 3 feed schedule and I just moved them from my seedling box to their permanent home on Sunday the 22nd of August. Unlike prior grows, I am getting a red/brown sediment that is building up on my rez and in all the grow bins as well as white Foam on top of the water in the grow bins. I thoroughly cleaned my system before use and have changed the system and flushed it now 3 times this week and each time the sediment and foam returns. On top of this the plants look a little droopy and the leaves are curling. I am using GH Flora Series nutes. (Micro, Gro, Bloom, CalMg, UC Roots)
Each system uses about 24 Gallons of water and each system received the following feeding.
Micro - 240ml (10ml/G) Gro - 240ml (10ml/G) Bloom - 120ml (5ml/G) CalMg - 75ml (~3ml/G) UC Roots(H2O2) - 75ml (~3ml/G)
This is double what I was doing in my last two grows. It seems like the sediment is the color of the micro nute but I have no clue what is going on and am hoping for some guidance. Thanks! Am I just over feeding? Could that cause the foam and the sediment? The sediment is hard to see in the image but it is there!! in the image you can see the red/brown sediment coating the inlet to my recirc pump. that whole piece should be white.
The foam is bright white but drys brown. roots are still nice and white.