prawn Posted February 25 Share Posted February 25 (edited) sooo..week 7 .. 15cf..ph6.4...and a few plants are turning yellow at tops?..have tried a few days at lower light intensity and gave them a hit of pk (I don't usually use it) but not getting any better and slowly spreading...the airpots are on drippers fed 3 times a day and always damp but not waterlogged...anyone out there recognising this and can tell me how to go forward? Edited February 25 by prawn post pic twice Link to comment Share on other sites More sharing options...
prawn Posted February 25 Author Share Posted February 25 in Coco.. temps and humidity good Link to comment Share on other sites More sharing options...
MindSoup Posted February 25 Share Posted February 25 Maybe a bit too much light intensity? 3 Link to comment Share on other sites More sharing options...
lildaveham Posted February 25 Share Posted February 25 @prawn Are you getting much run off? I dont do Coco but if its the top growth being affected that would say a deficiency in a nutrient that does not move freely to me. I was thinking if your not getting much runoff then it may be a buildup of salts within the coco and in turn thats locked something out? I may be talking absolubte shite though @GSZZ What do you reckon? 2 Link to comment Share on other sites More sharing options...
prawn Posted February 25 Author Share Posted February 25 nah thats good advice mate run off is good tho .. am run to waste and always get a good 20% ... I'm stumped Link to comment Share on other sites More sharing options...
prawn Posted February 25 Author Share Posted February 25 4 minutes ago, MindSoup said: Maybe a bit too much light intensity? yea thats what I thought too - have dimmed the lights to 30 d.l.i. in photones light meter app... but not seeing it getting any better... only a couple weeks to go but really wanted to get full potential - such a strong plant until a few days ago... Link to comment Share on other sites More sharing options...
MindSoup Posted February 25 Share Posted February 25 What's your VPD? Link to comment Share on other sites More sharing options...
Herbal Kint Posted February 25 Share Posted February 25 Id bet on the light to mate,you running same setup as usually? Link to comment Share on other sites More sharing options...
prawn Posted February 25 Author Share Posted February 25 3 minutes ago, MindSoup said: What's your VPD? just checked me Govee dont really use vpd - just make sure temp and humidity on point... but says between 1 and 2 kPa? Link to comment Share on other sites More sharing options...
prawn Posted February 25 Author Share Posted February 25 5 minutes ago, Herbal Kint said: Id bet on the light to mate,you running same setup as usually? hey herb - I'm running 4 spiderfarmer sf 7000 ... yeaman - and yeah - was pushing them to max - d.l.i. was at 45-50... have turned them right down for end of flower so hopefully thatll do it.... seems like cheese is more sensitive to light if thats the case as been running icecreamcake at max just fine...ah well live n learn ay- its been a few days tho and not much change yet 1 Link to comment Share on other sites More sharing options...
MindSoup Posted February 25 Share Posted February 25 (edited) 8 minutes ago, prawn said: dont really use vpd - just make sure temp and humidity on point Yeah same , but it felt like a good question My tents ceiling is very low, so I can't really avoid light stress. I try to shoot for 28C and about 60% RH, they seem to prefer it over lower humidity. it's a bit high for rot prevention but plenty of internal air circulation and minimising any sharp drops in temperature should put a stop to that for the most part. Edited February 25 by MindSoup 1 Link to comment Share on other sites More sharing options...
prawn Posted February 25 Author Share Posted February 25 3 minutes ago, MindSoup said: Yeah same , but it felt like a good question My tents ceiling is very low, so I can't really avoid light stress. I try to shoot for 28C and about 60% RH, they seem to prefer it over lower humidity. it's a bit high for rot prevention but with plenty of air circulation and minimising any sharp drops in temperature should put a stop to that for the most part. haha was good question...almost sound like we know what we're doing ay yeaman same ... am running humidity lower for end of flower tho... also - lights are a good two foot away from plants.. but they were turned up max so...... Link to comment Share on other sites More sharing options...
MindSoup Posted February 25 Share Posted February 25 Well I can understand the trepidation, but I reckon, if you let the humidity raise a bit, maybe even just during lights on, it would probably reduce the problem. I reckon . Link to comment Share on other sites More sharing options...
prawn Posted February 25 Author Share Posted February 25 1 minute ago, MindSoup said: Well I can understand the trepidation, but I reckon, if you let the humidity raise a bit, maybe even just during lights on, it would probably reduce the problem. I reckon . nice one I'll give it a go ay and keep the lights dimmed to 70% and cross fingers.. see whappens in a few days Link to comment Share on other sites More sharing options...
MindSoup Posted February 25 Share Posted February 25 Yeah she'll be alright buh . 1 Link to comment Share on other sites More sharing options...
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