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Is there any media under those rocks or is it 100% hydro? If so, what’s the water temperature? About 68-70F is where you want the water temperature with hydro.
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Not all leaf issues are caused by a lack of available nutrition. Especially mineralized bottled or powdered nutrition that contains all the essential elements. Mineral lockout and mineral unavailability are two different things. There are many ways to damage roots.
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Necrotic lower leaves are typically caused by pH stress (hopefully) or pythium (root rot).
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Casadelwhacko posted an update 4 days ago
So I figured out how I can use an open port on the Controller 69 as a fertigation timer finally. Maybe this will help someone else.
Plug a UIS Outlet into the open port and then set it to cycle on for ten and off for fifty minutes, for example, and then plug a suitable mechanical timer into it the UIS Outlet and set it to mirror your…
danknuggardens, krommm and 4 others-
Don’t ever let anyone tell you that potheads are dumb and lazy. This is Brilliant engineering. Bravo Zulu.
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Symptoms will always get worse before getting better with damaged roots. The time it takes to recover during flower severely affects yield/quality.
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