pH jumping up is usually a pretty reliable indicator of pathogen infection in the rootmass. 9.5 is out of the ballpark. Don't adjust pH of water before mixing with nutes. 5.5 is too low, in any instance. The magic number for pH in hydroponics is 5.8. Make sure your pH meter is not lying to you. Calibrate your pH meter before EACH use, employing reference standard 4.0 & 7.0 solutions. Colour-matching pH test kits are not suitable for hydroponics. If you don't have one, get a good pH meter. Eutech's meters are reliable and durable. Their pH Tester 10 is a good 'un.
I guess H2O2 will do the trick... Are you still putting 10 ml/ L of H2O2 in your reservoir when you make a new batch?
Although ph is high, growth isn't slowed, well at least not yet. Tips of new growth show no signs, look great, maybe it was my rockwool treatment
Any helpful tips on flushing or treating loose rockwool, I followed your info on treating the cubes and grodans with how to stabilize the ph of their product. Maybe I missed a step somewhere
I'm using my cloning tent for my seedlings... Temps 80 F +-2 40 RH, Do you think they need more humidity?
I have read all your threads for the past two years anonymously until the hurricane that tore threw the states... Rollitup and GrassCity, I finally built it.. Still making modifications, but I'm at the start of my SOG journey Al B style
Bohdi seeds Goji OG, Head trip, Dream lotus,
Rockwool mothers 400 watt HPS 2x4 tray
4-2x4 trays with STG and 2" of rockwool under 2-1000 watt
Clone tent T5 6bulb 343 watt- ( I know it's to much compared to the 18 watt flouros )And all the accesories..40 mm of course
Plants I have growing now are to practice 40 mm cubes and loose rockwool and hopefully get some clone practice and flowering practice. No magic sauces or tricks up my sleeve Al B, plain and simple how you have outlined it....
Thanks a bunch for the fast track of knowledge from your 17 years of hard work it's almost not fair, but the information age is what we are living in.. Thanks Al B
Have you visited Breedbay forum?