<span class="link_user">@Growfather1</span>, i think i didnt used the correct Greenhouse feeding schedule. I printed it a while ago for soil, instead of hydropponic. At time, there was no itention for dwc.
Jealousy has a big calcium deficiency and my water is soft with 0,2 EC. It seems the correct amount of calcium is at least making the Ph more stable. Lemon Cherry Gelato was not impacted from Ph Drops, even tho it had less amount of calcium and ist twice the size. Im still observing and i want to grow with Greenhouse feeding in upcoming runs, but thanks for the tip, i'll check their product.