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bmvape started grow question 4 years ago
The plants colors look healthy and about 8 flowering sites appearing on NL and 3 on WW. However, the leaves, particularly on the NL look to curl under. I've been having little trouble keeping the pH in the 5.5 - 6.5 range, seems to drop to the mid 4s daily, but fix quickly.
Week 4
Leaves. Curl down
HighTV answered grow question 4 years ago
@bmvape In order to diagnose your plants you need the right information! Plants have 2 types of nutrients called mobile and immobile nutrients. Immobile nutrients CANT be moved around the plant and due to this the symptoms show directly on the newer growth where the deficiency is active. The other type of nutrient is Mobile. Mobile nutrients can be pulled from the lower leaves to be given to the newer growth up top as a survival method so they show symptoms on the bottom side of the plant first. Your plant is experiencing a SEVERE case of Chlorosis(Yellowing) and Necrosis(death) in the leaves. Its obvious that your plant is dying some Nutrient deficiencies, but what might not be so obvious is why. You mentioned replacing the water in your basin - doing this lowers the Nutrients in the water and replaces it with more water! This is not good! Never swap out water without replacing the nutrients! To better help your plants recover you will want to replace what the plant drinks then PH the Basin to 5.8 EVERY SINGLE DAY. Then Once a week swap out ALL the Basin with more water+nutrients. This is the ONLY way for your plant to recover and if you do this she will recover.
Green_Friends_Inc answered grow question 4 years ago
Hello @bmvape

Im familiar with your growing style and your plants are looking pretty good :+1:

Now IMO and based on you say, it is low temps and low pH (not in range for CAL/MAG uptake) that are the cause of the leaf color/curl symptoms your seeing.

Since you say you "fix quickly" but also say in another post "by end of week" I am little confused as to how long it stays in such a low pH nutrient solution. But either way daily pH ing would be better than weekly.

Keep them frosty and stealthy my friend :grin:
OutForReal answered grow question 4 years ago
Hello ! Bro you are in flowering so the MaxiGro is useless now , switch to MaxiBloom as soon as possible. Concerning your feeding : it is way too low as you are in hydro and with the look of your plants ( Looks like in flower since 2 weeks ) your Ec should be around 1.2 to 1.6 so you'r not in the good range. I suppose that your plants are draining all the phosphorous and potassium quickly and as consequence it low make you PH fluctuate. Generally in hydro with MaxiBloom you don't need to adjust it that much. I hope it will help you :grin::v::skin-tone-3:
Stick answered grow question 4 years ago
Hi @bmvape! Your solution is too cold, and as a result, growth is slow/stunted. Try to raise up your temps by 3~4°C and you should thee these babies praying the light happily. You're doing great by keeping the nutrients low on these autos, but try to stick into the perfect pH range for hydro setups: 5.5~5.8. Hope this will help, keep us up-to-date and happy growing :facepunch:
CRiSPrGrow answered grow question 4 years ago
hey man looks like they are struggling with the PH fluctuations, this is the hardest part for this though, nothing much you can do except add less PH down, if I were you though i would add some cal mag at least if not other micronutrients as well, another thing that may help is using the correct chelation agent, for example a 5/12 humic fluvik acid mix. I hope this helps my friend ! :rocket:
Mrs_Larimar answered grow question 4 years ago
Hi. lets talk about Ph in hydro. Its like you said in a Range between 5.5-6.5 and important word is Range.....let the ph flow from 5.5-to 6.5. he dont have to be on one point. the opposite is the solution, to get the whole nutes he got to flow in that range.LOok forward the roots get no light... and go on like that