What could the matter be with my Lowryder x plants?

[tj.shulman]

Hi guys,
My lowryder x plants are starting to look a little sorry, it is my first grow so I`m not sure what to do. I had a look at the trouble shooter but didn`t see anything quite like it. In between the vein are getting discolored and brittle, also some leaf curl. Its mostly the lower leaves so I don`t think it is heat stress. Temps are normally 26 - 30c in the grow area with a fan blowing across constantly.

Also the new shoots/leaves seem to be quite a light green, is this normal?

I am feeding them half strength nutes and Molasses.
More feed?

Help!

 

[mouthmeetsoap]

Looks like either a quick cal mag fix is needed and/or a pest is munching on your leaves.

 

[tj.shulman]

I have some hydrated lime which is good for cal and mag. I'm not so quick to use it though as it's PH is 12 or something.
Would dolomite lime be better?

I had a good look around for pests but couldn't see anything.

 

[mouthmeetsoap]

Hydrated lime will work fine, but it is much faster acting. Be light with it.

 

[milowerx96]

You either have a real pH problem or you gave them to hot a shot of fertilizer. Go get a pH probe. They are like $10 or so.

 

[theexpress]

looks like the begginning of a mag, calcium def... foliar feed with a lil epsom salt and water.... 1/4 teaspoon epsom salt per gallon

 

[BeginnersLuck]

You either have a real pH problem or you gave them to hot a shot of fertilizer. Go get a pH probe. They are like $10 or so.

Exactly what I was thinking

 

[tj.shulman]

Hydrated lime will work fine, but it is much faster acting. Be light with it.

Any idea of how much to add per gallon of water so not to upset the PH too much?

You either have a real pH problem or you gave them to hot a shot of fertilizer. Go get a pH probe. They are like $10 or so.

I tested the water run off with some PH strips and it is 6 - 6.5, so that seems pretty ok. I have been feeding half strength nutes so I`m not sure how I might have zapped them that way. I`ll try some weaker tomato feed for the next feed and see how that goes.

looks like the begginning of a mag, calcium def... foliar feed with a lil epsom salt and water.... 1/4 teaspoon epsom salt per gallon

I`ll try some epsom salts tomorrow if I can find em in town.

Exactly what I was thinking

PH problem or too much fertilizer?



Thanks guys.

Would you recommend a flush with the epsom salts?

 

[mouthmeetsoap]

Here you go buddy!

"Raising soil pH: small amounts of hardwood ashes or crushed oyster/egg shells will help to raise the soil pH. Hydrated lime can also be used to raise the pH of soil. In containers, use no more than 1/8 cup of hydrated lime per cubic foot of soil (per application). Mix it into warm water, then apply the water to the soil. When growing in an outdoor garden, follow the manufacturers instructions.
Wait at least a day or two before checking the pH level of soil after attempting to raise, lower or stabilize it. If adjustments still have to be made, use small amounts of whatever material you are using." -http://www.a1b2c3.com/drugs/mjgrow9f.htm


Haha.