3wk into flowering, possible pH problems - doubts and questions - help appreciated!!

Well, this is my first grow and my two plants are exactly 22 days from switch to 12/12. I am a bit worried about the yellowing fan leaves. I know it is to be expected to some extent but they are yellowing steadily and fast and its only been 3 weeks since the switch. They are fed biobizz bloom (3-6-3) with every watering which is pretty much every 2 days, and every other watering I add a few ml of the veg nute i used(6-3-6).

I think the soil pH might be off, but Im struggling to measure it properly. I have some cheap-ass ph/moisture/light meter(which later on I saw in Cervantes` bible) but I dont really believe it actually works too well since every time it shows ph of just under 7 when moist(water i normally use is 6-ish) and close to 8(!) when dry. I tried measuring the runoff using ph-neutral water and litmus papers and they both came out 7-ish. Is there any definitive method to measure that isnt some very expensive tester?

Anyway, this is my "learning" grow and Im not expecting to much of my babies yield-wise but now seing how they actually handled all the previous problems nicely Id like to help them a bit now so the end product would be of good quality and hopefully ready for xmas/new year.

Or do I just worry too much??

Any helpful input is well appreciated.
MaD

I just noticed that the photo of actual plant isnt too good, heres another one from 2 days before

Once in flower, plants do not need N anymore so the leafs slowly die off, nothing to worry abouth BUT you really should get a propper PH / EC (ppm) meter and get a real runoff value. Do you flush your plants,and if you do when was the last time? But in general, they look great

It looks a little overwatered, otherwise it seems healthy....

I have never flushed them really, I thought you only do it nearing harvest. Should I do it now? Not sure about overwatering, I water when the pots are really light and leaves start to droop a little, and that's usually every two days, sometimes 3. That actually brings something else up - there in quite small pots, about 2 gallon guess that's why they dry up so fast. I know I screwed up on this one adding also that they got badly stretched in seedling stage so I buried the stems when I repotted them so the roots have actually(at best) 3/4 of those 2 gallon pots to use. Could that become an issue in near future? Or maybe it has already? They dont grow anymore, at least not the main cola, I haven`t moved the light in like 2 weeks

madmad said:

I have never flushed them really, I thought you only do it nearing harvest. Should I do it now? Not sure about overwatering, I water when the pots are really light and leaves start to droop a little, and that's usually every two days, sometimes 3. That actually brings something else up - there in quite small pots, about 2 gallon guess that's why they dry up so fast. I know I screwed up on this one adding also that they got badly stretched in seedling stage so I buried the stems when I repotted them so the roots have actually(at best) 3/4 of those 2 gallon pots to use. Could that become an issue in near future? Or maybe it has already? They dont grow anymore, at least not the main cola, I haven`t moved the light in like 2 weeks

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if you haven't noticed any growth, it could be root bound... i'm no expert, but i think re-planting into 5 gallon pots would do them good... what strain is that btw?

sleeperls93 said:

if you haven't noticed any growth, it could be root bound... i'm no expert, but i think re-planting into 5 gallon pots would do them good... what strain is that btw?

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Sorry, been away all day. Yeah I thought about repotting them but again - wasn't sure if that's a good thing to do in flowering. I read somewhere about cutting just bottom of the pot off and repotting like that - might give it a try. The strain is White Diesel from SensiSeeds/WhiteLabel

repotting would be the best idea. do it when the soil is bone dry and you'll have less problems, it will shock the plant a little but it allows your roots much more room and u will also be able to c if ur plants are rootbound when u pop them out, i recon thats what will have happened. after repotting water and feed them as usual. as for cutting the ass offf the pot it will allow the roots out but not as well as a normal repotting would.

So what do you think is better then - repotting and slight shock or cutting the bottoms off and no(or less) shock? The plant on the right already stopped growing for over a week once before(dunno why) thats why its so much smaller and a bit gimped compared to the other one, wouldnt want to test its patience with me again unless its absolutely necessary ;]

So should I repot them now?