SGS PinkBuds Auto - What gives?

[happycamper15]

Hey AFN!
Im currently at about week 7 of two SGS PinkBuds Auto's. They are together in a single 3.7 gallon pot with OF and perlite. They're under a 150hps with side CFL's. Tiger bloom is the only nute I feed my autos. I have no means of measuring pH or EC. I use collected rainwater as my well water is orange with rust.

Over the last several weeks, they've developed something. From my research it looks like either magnesium def, calcium def, or some sort of pest. I've never had this issue with auto's before. This morning I fed 1tsp Epsom salts in a gallon, plus sprinkled some on the soil surface thinking it might help if its magnesium related. I will upload some pictures.

Any help would be greatly appreciated. THANKS!

 

[zaQ]

Looks like calcium deficiencies... get some dolomite lime.

 

[Northern Grower]

I will 2nd the cal def. I am with you that you also have some mag going on.

The lack of bud swell is making my spidey sense go off.. Are you at full dosage on the tiger blooom?

 

[Red eyed c]

After looking through the deficiency list I'd agree with zaQ

 

[happycamper15]

Thanks. I figured it was calcium. Unfortunately CalMag isn't an option for a week or two, when I can drive 2 hours to the nearest Hydro shop.

I will have to look around for some dolomite lime. Any other substitutes to calmag?

 

[JM]

mollasses and epsom salts...
1 tablespoonmolassesto 1 galwater and 1 tsp epsomsalt to 1 gal water

agreed...cal mag/ potassium def going on.

 

[happycamper15]

I'll administer. Much appreciated AFN

 

[JM]

npmate...good healing plant karma sent!