Gregorius Green
Member
Hi I planted a few seeds in start of september and I now have 3 plants that are growing well. It's my first serious grow ( did one before this that was mostly a failure).
All my 3 plants have some yellowish lower leaves. Could it be magnesium deficency?
I'm using an organic soil I bought. I've just added 5-10% perlite to it. It has a pH 5.5 - 6.5 according to the manufacturer.
In the picture you also see some coco fibre as a top layer, the rest is organic soil + perlite.
I'm using tap water that has a pH around 8 and its soft.
I recently moved them from 1 gallon pot to 4 gallon smart pots.
I have not added any extra nutrients myself. Only added plain tap water thus far.
The plants are growing in a grow tent under a 400 W HPS.
Any recommendations? Should I lower the pH of my water?
Or just continue as I've been doing?
All my 3 plants have some yellowish lower leaves. Could it be magnesium deficency?
I'm using an organic soil I bought. I've just added 5-10% perlite to it. It has a pH 5.5 - 6.5 according to the manufacturer.
In the picture you also see some coco fibre as a top layer, the rest is organic soil + perlite.
I'm using tap water that has a pH around 8 and its soft.
I recently moved them from 1 gallon pot to 4 gallon smart pots.
I have not added any extra nutrients myself. Only added plain tap water thus far.
The plants are growing in a grow tent under a 400 W HPS.
Any recommendations? Should I lower the pH of my water?
Or just continue as I've been doing?
