That's too bad because that's where coco really kicks ass, in flowering.
PBPro full stregth is too strong for ANY medium, when I used PBPro in coco I used half strength every 3rd or 4th watering, with coco less is more, as the coco acidifes it releases alot of K and makes P more availble.
I never watered every day, I treated it alot like peat except I used coco only with no ammenments, I watered like every 3 days until I got about 10% runoff.
Rinsing the peat out with RO water was necessary until I swtched to the Canna brand coco peat, it is the best coco substrate available IMHO, I still rinsed it a bit.
If your using PBPro you'll need LiquidKarma as well, humate levels are best higher in coco, if you look at Canna nutes they are designed for coco and contain alot of humates and fulvics to help absorption and buffering.
PBPro is also designed for coco but you will need to supplement with the calmag formula, Ca and Mg are the 2 most common deficientied in coco in part due to the high cationic exchange rate and the presence of K, I added it 1/4 strgth or up to half 2/3 way through flowering.
You can also mix coco half with half hydroton/hydroclay but then you'll require daily of twice daily watering.
Please give it a shot in flowering, I was dissapointed in veg but when flowering too over I was very impressed.
Lol my coco plants in flower are dead or burned ... I just am not liking the handwatering, and not being able to give them the nutes I want to. In my dwc culture bloom they are on full str pbp, and pk's with no burn. I think i just don't like any mediums lol. So far all i like is ebb and flow with hydrotron and dwc. But well see .... if i can get some good veg growth out of these coco mothers.
Look at it this way, coco is way less expensive on nutes, I started my first grow with DWB bubblers and PBPro and wasting a res every 3rd week and messing with the ph just pissed me off.
If your using a run to waste table the by all means hook them up to a dripper with a 1/4 stregth solution and run to waste or recirculate although RTW is best IMHO to cut on salt buildup.
Have you tried cutting down on the nutes and using more LK?
I have flowered many times in Coco and 3 times on the cns17. When not going with the organic teas either canna or cns at 1/3 - 1/2 strength once a day to 10% run off. I have used supliments like Cannazym and believe that it is a very big help keeping the root zone happy. LK, Rhizotonic, bioboost and ........ no trouble at all. How is your water source and other variables?
if your the type that likes to whisper sweet nothings to your gals for hours-then cocoa is for you-i spend alot of time with my ladies-they mean lot to me so hand watering is just one of the things i do for them-it gives me pleasure
cocoa has been a boon for me-i use the same brand of nutes as before-foxfarm and don't amend with anything else-runoff is meager at best-less than 10%
i water every other day and have smaller 1.5 liter containers
I have been a coco die hard for several years now. I used to stick to the Canna Coco program (full selection) pretty tightly. Then a move made it harder to access and I tried CNS-17. Worked fine as well. I have tried many methods from dwc, aero, organic (doing that now, coco based though) and coco has been the easiest most trouble free. I went meter free for years on the canna. I am now using straight canna coco fibre and organic teas. Also using mixes as mentioned above. All the while it has been automated watering and no garden access 3-4days a week! When people tell me that it takes a lot of time and work to get coco to go easy I do not understand. I think other garden environmentals are usually out of check or the water supply is bad or the coco fibre used is junk. Just love the stuff. You can not over water with quality fibre and it is forgiving on watering intervals. Had a pump die and came back to a full resevoir 4 weeks into flower. Everybody was fine!
Hmm well this botanicare coco, 1/2 str cn17 grow, and 275 watts hps , = healthy green plants that grow very very very very slow. This would be great if I wanted my mothers to be small, but I don't ... are 1 gallen pots to small for coco?
just for comparisons sake, i use bio bizz coco at the rate of two parts to one mix with fytocell flakes. this recipe allows for perfect moisture balance! one watering of approximately 4-5 cups of water every other day (in 3 gallon bags). im running my plants (in veg) at the rate of four nute rich waterings per five waterings. My full power nute mix (approx 800 ppm) seems to be exhibiting no nutrient burn. veg ferts mixed into R/O include sensi grow A+B (AN), sweetleaf (AN), sensi zyme (AN), Green Fuse veg formula, as well as sub culture (Botanicare), B52 (AN), voodoo juice and piranhha (both AN), delivered at approx 6.2 ph; all very close to the recommended dosage and time frame. maybe its my strains, but i seem to be able to manage a MUCH higher ppm than appears average, or recommended. but as long as those plants are dark green with explosive growth, ill just sit on it. camera comin any day via UPS so ill be showin you guys soon.
glad they are bouncing back. that plant on the lower left of your last picture has some funky lookin leaves. that one on the botom looks like the longest middle finger ever.
Been following Neptunes first "Coco Voyage " and he did very well staying with 700ppm's & watering/dripping once a day . I always seem to gravitate to mixing in perlite into everything which areates and does allow more buffer from overfert problems ...plus allows for more waterings/feedings under 1000's.
The SkunkWerks in Oakland (SR71) go only 700ppms of Sensi with their mothers in pure Coco and they always look in great shape . I'm sure they do a flush bi~weekly as well .
* Have to admit that rocks/clay really do rock ....given all that aireation to the rootzone ...but would rather underfertilize a plant & bump up the nutes gradually than burn them . Also can supplement with foliars too .
(have to learn myself , to go a lil easier with the Cal/Mag )
But you're looking bettah bro ! Let us know when u hit the perfect blend .
my veg plants i feed every 3 days with near full strength nutes.
and ive got a bloom setup where im trying out random large feedings, large pots and small pots, 4 feeds per cycle, e/f at twice per cycle and some trays of coco by itself with no perlite vs some with smaller perlite. I just did a huge run of chunky perlite vs small perlite and the small rocked the chunky hands down on every feeding schedule i threw at it. I just got back from the garden expo in frisco and i had tons and tons of samples and trial packs to use and i didnt really see any problems with any of them..at any strength.
Point being, ive got at least one version of what someone has said is the wrong way to do it, and they are all working just great. There has to be some combo of problems here, and i bet its something to do with your bag of coco not liking higher nute levels. I had noticed problems switching from low frequent feedings to large infrequent feedings.
If i were you id keep the nutes cut back on em and slowly increase the nutes up to full strength when they can take it. I did a side by side of aerocloners with nutes vs no nutes, and while the clones looked the same 2 weeks later - when i transplanted them to new pots and fed them 1/2 strength nutes the ones that had previously been fed took off like raped apes, while the othes showed signs of burning and i actually lost a few of em too. So maybe changing irrigation nute strength as well as frequency can cause problems.
just my .02 to add to the pot
good luck with the coco, ive had good luck with it - used to love dwc but the temp issues are no fun in summer, coco is just as quick and dont mind the temps.
just switched over to Canna nutes and bumped them up to 1000ppms for seedlings noticing no overfert problems . Going even higher on already established plants making sure to water till run~off then cool them down into 12/12 cycle. Just found plants were actually needing more nutes and starving at lower levels . But then again i'm a typical ****ed up American that wants everything fast & convenient to food , sex , entertainment and just about everything else , lol.
* Knowing all Coco is not equal , would say that a real good long rinse of anything less than the best, would be the best place to start then use the purest nutes .