P Deficiency - Help Confirm

I put 6 Chemdawg D cuts in 16 oz. cups filled with FFOF + perlite about 3 weeks ago. Been keeping them under low light while waiting to clear the closet of the current grow. For the past couple weeks they have been showing, what appears to me as, Phosphorus deficiency and getting worse. All 6 show symtoms. I gave them a small dose of Tiger Bloom yesterday with hopes to stop the madness. I've included a few pictures and would greatly appreciate if anyone can confirm my thoughts or give me ideas about what is going on here.

what's your ph? if it's too high or too low, that can lock out your nutes

kyoinidaho said:

what's your ph? if it's too high or too low, that can lock out your nutes

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6.5 - 6.8 ...

I'd really like to know the answer myself?? I dont want to insult your intelligence but tell me its not MG perlite.

they havent rooted yet..cloning st8 into dirt..? hmm if this is the case..ive done the dirt clone thing..and it took a full month for them to root and bounce back..they look like normal cuttings to me..if there not rooted where is the humidity dome..thatll help with wilting..also if there not rooted yet ,from wut i grasp the reason u pre soak cubes..rockwool at ph of 5 be4 inserting cuttings..i cause ur tryn to get the ph down enought to lock out N.. that way cutting wont produce any veg growth like leaves..instead promoting root growth..hope this helps..might be way off if those cuttings are already rooted {peace:

Yes, they were rooted before placed in soil. Rooted in rapid rooters. There were plenty of roots.

And yes, the perlite is MG. Is that bad? Been using it for about a year with no problems.

Thanks for the input so far. I really appreciate it. Keep them coming!!

CaliHighRider said:

Yes, they were rooted before placed in soil. Rooted in rapid rooters. There were plenty of roots.

And yes, the perlite is MG. Is that bad? Been using it for about a year with no problems.

Thanks for the input so far. I really appreciate it. Keep them coming!!

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MG perlite has MG chemicals in it. Probably burning your clones tender young roots. Are you watering thoroughly? If not you might have "hot spots", areas of fert concentration in your soil. Just my thoughts....

itsgrowinglikeaweed said:

MG perlite has MG chemicals in it. Probably burning your clones tender young roots. Are you watering thoroughly? If not you might have "hot spots", areas of fert concentration in your soil. Just my thoughts....

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I do water thoroughly. Until water just starts to run out. About 100 ml H2O per 16 oz. cup.

The problem seems to be slowing. Hoping the shot of P a few days ago is helping.

Somehow, I just don't think the perlite is the culprit. I've been using it for the past year (this strain included) with no ill effects. I've seen nutrient burn and this just doesn't seem like it. Wont discount the idea though. I appreciate your help.

CaliHighRider said:

I do water thoroughly. Until water just starts to run out. About 100 ml H2O per 16 oz. cup.

The problem seems to be slowing. Hoping the shot of P a few days ago is helping.

Somehow, I just don't think the perlite is the culprit. I've been using it for the past year (this strain included) with no ill effects. I've seen nutrient burn and this just doesn't seem like it. Wont discount the idea though. I appreciate your help.

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Thats cool man, I hope they continue to improve. I realize i may have been grasping at straws somewhat with the perlite, but with any mystery ya gotta eliminate the simple stuff 1st ya know? Let us know how you make out?

Well, it appears the shot of Tiger Bloom did the trick. The problem has stopped spreading and the plants are looking great.

Thanks for taking the time, guys. I really appreciate the help.

Sweet! Way to grow!