Still having unknown plant problemsa

[darbolah]

Hi guys,

Iv just started flowering my 4-5 week old plants to find a female for cloneing for smoking (not sure yet) and iv noticed that my bottom leaves were turning a rusty/bronze/brown on the tips and working its way up the leaves. Also a few little patches appearing in the middle of some lower leaves.

Now the thing is i was using a bad ph tester and i was under the impression it was around 7 and when i tested it today with a digital tester it was 3.8. So iv drained the resevoir and filled it with fresh water and almost full strength canna vega a+b and canna rhizo. Adjusted ph to 6.4 (using strait perlite in an autopot system) so im hoping that will fix the problem but im pretty worried as its infecting all 3 of my larger plants. I just want to see if the low ph is what would have been causing it.

Btw im pretty sure its not nute burn as i was only using half strenght and it wasnt so much of a crispy burn, rather more of a corrosion. Sort of....

Hope you guys can give me some feedback with the information i have provided. Pics soon hopefully

darbolah Reviewed by darbolah on 04-13-2008. Still having unknown plant problemsa Hi guys, Iv just started flowering my 4-5 week old plants to find a female for cloneing for smoking (not sure yet) and iv noticed that my bottom leaves were turning a rusty/bronze/brown on the tips and working its way up the leaves. Also a few little patches appearing in the middle of some lower leaves. Now the thing is i was using a bad ph tester and i was under the impression it was around 7 and when i tested it today with a digital tester it was 3.8. So iv drained the resevoir and Rating: 5

[darbolah]

elp me

[stinkyattic]

Sounds like lockout, possibly K lockout, from bad pH. You are on the right track now- pics asap, but the other thing is that I'd watch for tipburn since you just cranked up your fert strength. I like that canna stuff. It's user friendly!

[grey1223]

PH issues are a pain in the arse. They can cause symptoms that mimic various def.'s. As Stinky said you're on the right track and I think you'll be OK.

[darbolah]

thanks heaps guys. My ph is now 5.8 but the burn is still moving up the leaves a little but im hoping to see that dissappear soon.

[darbolah]

Hi guys,

Just an update on my current grow and my problems. Iv been have ph problems and i think i have a K def. Iv decided the hydro grow system im using is to hard to control so i am going to wait for the 3 plants i have to start showing sex and i will take 6-8 clones from the female plant/s and select the best 2-4 for my new fresh grow. Il then put the rest of the plants i used for clones in my back yard and i might get a few cones from that :jointsmile:

Ok so heres what i need help with (stinky ). I need someone to explain to me what sort of soil i would use (mixture/type/fert) and also when i should take the clones. Once iv taken the clones i will plant them into small rockwool cubes and then into a prob tray and under cool white and warm white bulbs for 2-3 weeks using 1/2 strength canna a+b vega and canna rhizo. I will then plant into soil and then move them to 18/6 under my 400w hps. I will be needing to hand water the clones with a bottle and also by misting and would like to know how often and how much i should be watering them.

Thankyou so much for your help everyone. Comments and suggestions would be great

Iv included pics of my system and plants.

[darbolah]

also they have been on 12/12 for about 6-8 days now and im pretty sure they are all gonna be female. But im gonna wait until im sure.

[darbolah]

sorry but also if i was to continue growing these 3 under the 400w using my bloom nutes about how much yeild could i expect. Just generally what i should expect

thanksyou

[stinkyattic]

Yield- no idea, honestly.
A soil that resists changes in pH sounds like it would be right up your alley. IF you have access to a farm supply store that sells composted humus, this is a good soil ingredient. IT buffers the pH right where you want it for a soil grow. The farm supply, and even the home depot, around here sell a couple products that are appropriate. The one I prefer is a coarse mixture of composted cow manure and composted humus, whcih comes out of the bag at .5-.5-.5. Then I cut it by ~30% with perlite to drop the nutrient % and lighten it for drainage. You don't have Agway where you are I'll bet, but any farm supply should have something comparable.
Another option is ProMix BX or HP. This is a peat based, lime buffered, soilless mix that is often used in nurseries. If you use promix, you should plan to re-pot at least once every 6-8 weeks into a slightly larger pot, because the lime gets used up and the pH drops. Re-potting helps keep that from causing problems.
Take the clones from a healthy plant that is in veg. Take the top shoots closest to the lgiht. Wait until the plant is large enough to provide at least 4 healthy shoots, while still leaving about half the plant intact.

[darbolah]

well if the problem doesnt stop im going to take appropriate cuttings and then ditch the plant. So in this case can i take it from the plant once it shows signs of flower or do i have to revert back to veg first ?

Thanks heaps stinky