HELP! These girls look like they might have a phos...

Hey there so i was going through the weeks and saw the discolored leaves and such. I use fox farm too and the grow big has some PK in it, but perhaps not quite enough. The big bloom is definitely important for the whole grow because its their micronutrients...but what bloom nutrients are you adding? Possibly the tiger bloom, the 3rd in the trio? That one has the higher PK numbers. Im a big believer in less is more but If you are getting by with just the big bloom and the cal mag you may want to go pick up the tiger bloom too. Its funny they named the micro Big Bloom, how confusing and a misnomer. Good luck with the future progress ✌️

Your going to run into PK def right of the start of flowering if you dont give them a good boost to facilitate the transition from veg to flower . Not only does it benefit that it will also help facilitate the formation of flowers on the nodes you have and encourage new ones to form ( week 1 of flower ) from here you reduce the amount of PK fed in the nutrient solution you mix up over time until you a ready to flush and harvest your plant . Based on the stats that I'm seeing you are using straight soil , your ideal PH range for soil is 6.5 - 6.8 having it to low will encourage lock outs and over time create calcium build up on the roots slowing the rate of growth . Over all this is an easy fix to get back on track , just give them a solid PK boost for the first couple feedings then decrease over time your PK deficiency will come to a halt and your plant will return growing normally . I hope this information sheds some light on your situation and helps you on your quest to becoming a grow master !! - Happy Growing!

Hi @ChainsawSanta! Make sure your pH-pen is perfectly calibrated, give her a good flush with plain pH'd water (pH 6.2 - tap water will be better than RO water) then try to measure the runoff pH. If you get some crazy numbers, keep flushing until the rootzone is buffered (5.8~6.2). Once you'll be 100% sure your rootzone is okay, go back to a nutrient regime with half dose of veg fertilizer and half dose of bloom fertilizer. Start with slight doses and slowly increase if the plant is looking healthy. Hope this will help, keep us up-to-date and happy growing! 👊

Hi i dont agree with my collegues. In the diagnosis yes but not in the solutions. Yes it could be a phosphorus def. but i would not panick because of 1 or 2 older leaves that are yellow or spotted. At first i would check the ph in your soil... measuring the runoff..... if ph is ok just add your blooming fertiliser to the growth frtiliser. You are using small amounts thats totally of. if streching is finish you can only give the blooming fertilisers. Blooming fertiliser contains enough p and k for your plants to feel good. if ph is wrong; flushing and then adding the blooming fertiliser. more in the comments

Judging by the nutes and weeks in veg youre probably right. Other deficiencies go hand in hand with phosphorous also. Make sure your soils not too dence, that can effect the uptake (assuming there's enough to begin with) Phosphorus deff usually starts at bottom- so run to the nute store!