P
Phockshlock
- 11
- 3
Start with 5.5 and go from there. Rock wool likes 5.5 but it will do well up to 5.8.Wait so if i do gen 3 in perlite with rick wool, i should ph it at 5.5 or 5.8?
Awesome reply bro thanksYou mentioned your in rock wool cubes. Organic and rock wool won't mix well. Plus your going into 100% perlite. Basically you're running a hydro-organic system. Hydro-organics is tricky to say the least. The rock wool is very alkaline and needs a hydro type nutrient ph adjusted to 5.5. Running into straight perlite the ph would be closer to 5.8.
First, by all appearances it looks like your clones are overwatered due to the rock wool not drying out. Secondly your nutrients are unavailable organically in the rock wool. Organic nutrient solutions always have sediment. This builds up in the rock wool preventing it from drying out. Rock wool needs to go through a wet dry cycle just like coco.
If you like the perlite set up drop the age old organics and switch to something like gen hydro 3 part or even pure blend pro. Lose the epsoms as well if you're going to go with the cal mag. Too much mag causes other problems. And be diligent regarding your pH.
If your dead set on organics you'll need to consider changing to coco or something relative. I use rock wool cubes and transplant into coco, no problem.
Regardless, I would take them out of the perlite and rinse the rock wool thoroughly. Let them dry out for a few days, just until the cube feels lighter.
When plants sit in water or get saturated they develope a calcium deficiency. This is because calcium isn't mobile like other nutrients. It only moves through the plant as the plant takes up water. When the plant is saturated it stops pulling water, hence no calcium is being taken up, even if there is enough in the water. Calcium deficiency is why the leaves begin to yellow, particularly the new growth. Once a wet/dry cycle is established the roots will begin to grow out and the plants should recover.
Good luck, I know how frustrating this type of thing can be.
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