Hey guys I did a res change yesterday. rdwc . .7 Ec and 6.0ph static through the day This morning .7 Ec and 5.1 ph adjusted ph back to 6.0 . What is causing the drop in ph ? It does this consistently throughout bloom
Its the phosphorus being used changing the ph i think mate. Try giving the ph at 6.2 and see how that changes things
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So by striving to achieve a static res I should completely ignore the instructions on the advanced nutes labels 0.7 Ec seems to be that number right now that's like 30 mls each A and B and 20 mls cal mag in a 50 litre res leaving very little room in the Ec for big bud Am I doing this right? We use RO water 60 ppm
yer advanced say like 4ml per litre right? i never went over 1.5ml per litre with it, but the EC i ran on was always pretty high, 1.8 during flower with big bud. The pH perfect stuff is ok, but needs to be used at full dose to really work, and at them levels it over feeding the plant
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@macky yes 4ml per litre they recommend I am running less than 1ml/ lt and Ec is static so that's like 25% of their minimum recommended rate the rate they suggest for seedlings so I mix in big bud and cal mag at 25% of their minimum recommended rate hoping I am keeping the ratios right ?
Depend son the stage of growth mate, put a pic up for me 
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So, you're using Sensi Bloom a n b, with big bud now right?
I would be using about 1.5ml of a n b, and 2ml at least of the big bud per litre, Ec will be around 1.4
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