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its working a treat but I discovered the main problem today, my PH pen is f*cked, was reading 1 whole point above and refused to recalibrate so I lost my temper with it and smashed it against the wall, just ordered 2 cheap ones from ebay that you can set with screwdriver for now!

3-2-1 is the ratio for grow - micro - bloom in veg example = 60ml grow, 40ml micro, 20ml bloom

ok so I changed my system out, took 3 full bins of RO, did 2 together and then ad to add another because it wasn't enough! I set each bin at 0.2EC cal-mag and GH nutes 3-2-1 to a full EC of 0.85, pumped my system out and the new in and already about an hour later I can see a difference! they...

I know its an old thread but those of you saying PH doesn't matter in hydro are completely wrong!

feeling your pain right about now, this stupid ADWA ph meter has fucked a couple of my grows now, calibrate it and straight away it jumps to +1 or whatever! I have been posting shit about slow growth in my RDWC etc and it turns out to be this stupid pen!

Its a stone walled room 3m long by about 1.5 wide (guestimation) and I have 2x600hps 1 is dimmable but i only have the first 4 plants in atm as i was waiting for a delivery of seeds so im just running the 1.

LOL!

so glad I just spotted this topic!

Grade 8? do you mean the pipework? I will take the bolts off once they hold lol, im doing some LST will be doing some topping also hopefully get some vertical scrog going

I am also a keen advocate of GH some of my first grows were awesome, dialling in with RO seems more difficult though! photo of old grow underneath...as you can see they really went crazy and filled my tent, ive been struggling to get these same results since moving to RO and sealed CO2 grow. I...

didn't get the one with the best root zone the photo is too dark for some reason but one has a better root zone, I did starve them at the beginning they were wanting 0.6-0.8 and I was running them at 0.4, keep getting ppm and EC mixed up its a right PITA if you press the button my accident! as...

18/6 600hps but ive got it hanging vertical with rdwc tubs around them, ill go get a pic quickly

ok I will try! what about the slow growth or do you think iam just being impatient and got lucky a couple of times?

As the title says, This is my second grow using RO after multiple grows using hard water and the hardwater micro. I moved over to RO because my tapwater was so hard it was causing lockouts sometimes but im not getting the same explosive growth and some purple stems, even though the plants...

I use 3-2-1 because that's what GH says to use!

ok great thanks homebrew, I have just upped to 0.8EC with 3-2-1 so I guess we will see! I guess in some ways it might be better to change the ratios more slowly in this manner! could be a good experiment.

https://www.cannabis-seeds-store.co.uk/feminised-seeds/barneys-farm/lsd-feminised-seeds My fav strain!

Just as the title says, I have a big RDWC system and use GH nutes, filling this system takes nearly 48hrs with my slow RO system, I have started them off on the 1-1-1 ratio as on the GH bottle and the plants are picking up nicely. I would soon like to move to the 3-2-1 veg ratio and I'm thinking...

Im also going to bump this as It works a treat! I even plumbed my own soldered gas line into my room for it and a waste pipe out for the hot water, I decided not to use a res as it would just cost extra to run another pump etc, water is naturally recycled anyway right? My co2 controller runs a...