TeeTee man, i spotted this common trend. And checked on day 5-15--18 day plants in cocco plus, on some other sites. I have had it the first time i used cocco plus. Thats what made me try the Ugro....
I am trying the Ugrow Pure Premium
- U_Gro_Coco_Pure_50L.jpg (22.2 KiB) Viewed 37861 times
I just had the same thing happen, between day 5-15-18. That is a huge rise in Ph to 7.1
I see you are feeding overall 0.7 Ec Tee. So no shortage of nutrients available with N at its highest in veg window etc.....
here is your NH1 at 15 days teetee. If you look closely at the broad indica fans, there are rashes of light green. This is because at Ph's above 7 or above, due to "New" cocco high Ph, the Nitrogen is partially rendered "Unavailable" so Light N def occurs.
NH1 Day 15. Do a ph6 plain water flush tee and see if 300ml ofrun of is above 6 ok.....
- day 15 NH1.JPG (80.37 KiB) Viewed 37861 times
To check this i did 2 run off tests for Ph. (regrettably i did not take Ec), cocco Plus and ugrow both new cocco's washed out at Ph 7.1-7.2 =/- 0.2.
Except the ugrow, is worse, as it has a pre loaded guano and a pre loaded Ec of 1.5. This loaded Ec was unavailable from day 5 to 15-18, as the cocco dosant wash out or wash down the high starter Ph due to watering untill post 21 days 3wks.
I suspect the ugrow cocco Ph was higher, as it locked out N in the early stages (Slowing critical mass in veg) worse than plus, as it had added Ec. This led to an early N def again in my current grow (Pics Later).....
This leaves only 2 options to solve this high calcium level pushing up cocco Ph, in the early days of veg. That is pre wash down to 6.5 before use. Or feed/water at Ph 5.6 in early days to drag down cocco high Ph when new.
I am at a similar stage of growth to tee tee right now. And have been feeding at 5.6-5.8 and my run off Ec is now down to 6.4-6.5 post 11 days from new from 7.1!! this over the last 8-9 days since i addressed the issue of mild N def, due to high Ph N lock out.
It has worked quite well, as Ph of run off goes down, you start to increase the Feed/water ph to level off where you want it around 6.2-6.3. ie, an inverse Ph relationship at the start of growing in cocco...... to maintain and prevent high Ph N lockout.. and delayed veg structural build....
My mix in the end for the Ugro pure was this; 30ltr medium mixed up.
3ltrs john inns no2
3ltrs pre used cocco
3ltrs perlite
24ltrs of Ugrow
1tsp in 5ltrs ugro EcoThrive "Charge"
4tbls natural mystick powdered enzyme bacteria and fungi mix
medium aerated and left to come up to room temp...
Into 7ltr deep rose pots same height as 15ltr pots, 7ltr pots filled with 6ltrs of medium compressed mildly, or tapped down stiffly..........
This is the reason i believe, that a lot of the grows i have seen in cocco..... in the early stages, all look, very light almost florescent green, is mild N def, could be cal/mag, but very difficult to discriminate in early stages......... seen it before i started using cocco......... figured it must be one or the other but never give it a second thought using soil it dont happen.
But did shit all about it when started using cocco !!......... in other words fucin forgot about it...... til it slapped me back this grow !!.... obviously post wash out in use, post day 25, every thing goes like stable clockwork with cocco....... and mildly better yields also......and dosent seem to mind a 15% reuse or recycling mixed in either.
Here they are the N def crew, now in recovery. With high N shots and feeds at Ph 5.6/5.8, run off now 6.5-6.6 and dropping. N lock begins above Ph 6.8/7.0 in cocco denying early structuring in veg. So you defo dont need to use cal/mag buffer in early use of cocco, it would exacerbate the situation symptoms.
Shots taken 2hrs after lights out, n def makes em flop due to low structural integrity in the exolem....... N isant the only monomeric feed to be locked out at these Ph'es, but is the first to show it usually.... they should be a healthy pert mid to racing green not florescent due to low N, and other probably at those medium Ph,s at thr outset !!
The Ugrow looks and feels 100% the part. But chemiccally, it aint Ph 6.5 as stated on packet at all folks........ more like 1st wash 7.4 !!.... Autoberry
these are now a discontinued strain of high sativa 100% from Dp "Or Was" Pm me if you want to know strain, but i am banned from saying it in public !!..... but is the famous mother of alot of Dp strains, and is venerated as a high Dame at DP Autoberry