Spotted and Curling

Been having a problem with just one lady , rusty spots on leaves , drying out from tips in and curling up. Any help is appreciated.

I have no ph meter , Used nothing but rainwater untill last friday , when I bubbled some tap , and added cal-mag and some molasses , it seemed to stop any further progress but now it seems to be coming back.

Temps , low is 73- 75 degrees F night , and High of 90 daytime. 2 plants only one with this problem.

Picture of the start of it. and more extreme

1st photo is a calcium deficiency , foliar once at 2ml/L of calmag and 2nd photo is phosphorous burn, cut back on boosts.

budman111 said:

1st photo is a calcium deficiency , foliar once at 2ml/L of calmag and 2nd photo is phosphorous burn, cut back on boosts.

Click to expand...

Cool will do on the foliar feed , did this once last friday. How often is it okay to foliar feed? Second I dont use anything other than rainwater , untill this happened and I purchased cal-mag and unsulphered molasses. Actually I did mulch with 3/8 compost , again both plants and that was well before this problem. Both plants are 25 days 12/12 , and 55 days old.

Heres is the plant , with def. on those stalks it never produce leaves in veg , while being healthy and has lost about 8-10 leaves due to this problem in flowering , this plant is booming though (Bud/frost) compared to the other healthy one.

Calcium is really slow moving in the plant, thats why so many people see deficiency's, foliar just once and that will be enough to slow the deficiency and feed at recommended dosage. All the best.

Rainwater is on the acidic side...js

[/QUOTE]="Diabolical666, post: 10768031, member: 878665"]Rainwater is on the acidic side...js[/QUOTE]

yeah I was thinking the same thing. I switched to 24 hrs bubbled tap water last week. Thanks for all the info.

I recommend that you should get a pH pen or a drop test kit. Depending where you live the tap water can be very alkaline. You can find out more information about the local water that you have on the utility company's website. You can see the ppms of different dissolved solids as well as the pH.

I.e I live in a hard water state. The ppm of my tap is over 400, pH is over 7.5. I would certainly not use my tap to feed because it will surely cause lockouts or excessive mineral build up. Especially used in conjunction with Calmag, then the solution would be fully saturated with calcium. Not to mention how calmag brings up pH to more alkaline levels... Not necessarily good when trying to feed your girls.

Anyways, stick to rain water. It's mixed atmospheric CO2 & other particulates and is slightly acidic. It's a lot closer to the pH you want compared to tap.