Spots on leaves?

B

bobbjoedope

Member
Garlic Jam auto. Been feeding masterblend 5gal formula (12MB, 6 Epsom, 12calnit) running sterile (pool shock).

Been feeding full strength for several weeks now. Rez changes once a week or when Rez gets down to 1ish gallons. Always keep ph 5.8-6.5 usually around 6. Ec is always less each reading. Today for example, I changed the reservoir at 11:00 a.m. *I did half strength today* and phd to 5.8. Starting EC was 1691. Checked around 6:00 p.m. tonight And pH was up at 6.5 and EC was 1630.

First thing that's coming to mind is magnesium deficiency. Maybe I should raise the epsom levels?

The leaves are dark green but I don't see any burning. Thanks!
 

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Billy the Mountain

Billy the Mountain

Well-Known Member
bobbjoedope said:
Garlic Jam auto. Been feeding masterblend 5gal formula (12MB, 6 Epsom, 12calnit) running sterile (pool shock).

Been feeding full strength for several weeks now. Rez changes once a week or when Rez gets down to 1ish gallons. Always keep ph 5.8-6.5 usually around 6. Ec is always less each reading. Today for example, I changed the reservoir at 11:00 a.m. *I did half strength today* and phd to 5.8. Starting EC was 1691. Checked around 6:00 p.m. tonight And pH was up at 6.5 and EC was 1630.

First thing that's coming to mind is magnesium deficiency. Maybe I should raise the epsom levels?

The leaves are dark green but I don't see any burning. Thanks!
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An Mg deficiency will look lighter green between the leaf veins, i.e. interveinal chlorosis.

Rust spots are indicative of a Ca deficiency.
 
Mr. Mohaskey

Mr. Mohaskey

Well-Known Member
Personally I think the EC is too high. I would drop, but I feed lower. I dont ever get over 5/8 of the manufacturers recommended strength.What is your Temps, humidity levels, and light source?
 
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