DIY Wetwoods // DWCR Build

[Boradan]

Yeah I would love to have my res stay at 22-23, but with my temps 27-28 is the best I can manage. Your roots are looking good. Mine also get stained from my nutes, mostly AN B-52 which contains iron.

I have my reservoirs outside the tent. Helps control the temps. Though if ambient temp is high, that wouldn't help you
Since you already have chillers though, just set them to 22.5C instead of the usual 19C and get the benefits of the friendly bacteria.

 

[wetwood]

So. Can you only use the tea on non synthetic neuts? Such as dutch pro , canna etc? Obviously i dont want to change on this grow but for next if cost is much less.

 

[Boradan]

So. Can you only use the tea on non synthetic neuts? Such as dutch pro , canna etc? Obviously i dont want to change on this grow but for next if cost is much less.

I am using it with Megacrop and it doesn't get any cheaper than that tbh.
Due to the beneficials assisting in the uptake of nutrients, I am currently on a fraction of their recommended dose (though I do have to supplement it with CalMag Pro due to having COBs)

I have 2 plants currently running - each with their own reservoir and I change the res every 7-10 days.
My girls are 27 days old at the minute and I have used a total of 32g and 38g for the plants - that is 3 full feeds.
Each RDWC system is approximately 38 litres until the tap roots get out of the net pot, and then it's 35 litres after that.

For clarity:

Seedstockers BCN Critical XXL
First fill: Megacrop 8g, CalMag Pro 6g, Sweet Candy 4g (in 38 litres)
1st change: Megacrop 12g, CalMag Pro 6g, Sweet Candy 4g (in 35 Litres)
2nd change: Megacrop 11g, CalMag Pro 5g, Sweet Candy 4g (in 35 Litres)

Dinafem Critical+ 2.0
First fill: Megacrop 8g, CalMag Pro 6g, Sweet Candy 4g
1st change: Megacrop 16g, CalMag Pro 8g, Sweet Candy 4g
2nd change: Megacrop 14g, CalMag Pro 10g, Sweet Candy 4g

The drop in Megacrop for both plants in their second fill was due to the leaves being too dark and a slight Nitrogen toxicity. The Critical+2.0 though is very calmag hungry, hence its' increase.

Based on this slow increase in nutes, I expect to be at about 20g to 22g for flowering, with another 4 or 5 res changes.
That will work out at a maximum of about 150g of megacrop per plant in total.
The Megacrop cost €10 for 750g. That is 4 or 5 plants for €10 of Megacrop (the Sweet Candy is not 100% necessary, and I will also be reducing Megacrop in flowering, but replacing the reduction with Bud Explosion in order to keep the Nitrogen low, but increase the P and K).

The greenleaf Nutrient Calculator shows that I should be on about 37g per reservoir at this stage, so I am running at about 1/3 strength, which I believe is mostly due to the beneficials from the tea, with no need for the SM90.