Week 4 of flower EC Rising and Ph Falling Running RDWC

[GYO]

Hi Guys i hope you can help.

Im half way through week 4 of flower.
there looking great, I have upped my total EC to 1.8 (using tap at 0.5) and after 24 hours it had risen to EC 2.0. along with that my ph had fallen from 5.8 to 5.6.
so i left it another 24 and the EC stayed the same but the ph fell to 5.4. I upped the PH to 6 so will drift down, what would you guys suggest?

last week EC was 1.6 and had no issues and the EC was falling which looked like could have done with an increase?
I'm using canna aqua flores
canna rhizo
canna zym
buddha trees advanced meta boost
buddha trees pk 9-18
and plant magic mag cal

running rdwc res temp 19Oc
I think at the start of the week one had a bit of light burn which i have now sorted.

please any help or advice would be greatfully recieved

[B.A.BARACUS]

Get the Ec down to 1.4 & Set ph to about 5.7.. That should get them feeding again.. Ec should go down and ph should go up or stay the same which is good news...Also you dont need rhitzontonic, so drop that mate..

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[GYO]

thanks for the reply, i did wonder about the rhizo....do you think ill be ok without the rhizo? I use as was on the canna chart. this is the thing when i was running EC 1.6 it was falling and went down to 1.4 so thats why i upped. are you saying lower it to get them feeding again and then try to increase but maybe to EC 1.7?

thanks man

[joker_the_smoker]

yea would defo follow BA advice bro.drop the rhizo as its mainly used during veg. seems with rdwc you dont need to go so high with the EC. give it pop at 1.4 see hows goes. just case of findin that sweet spot for them

[B.A.BARACUS]

thanks for the reply, i did wonder about the rhizo....do you think ill be ok without the rhizo? I use as was on the canna chart. this is the thing when i was running EC 1.6 it was falling and went down to 1.4 so thats why i upped. are you saying lower it to get them feeding again and then try to increase but maybe to EC 1.7?

thanks man

Yes mate, Try getting them feeding again & finding a sweet spot.. I.e.. 1.4ec & Ph Staying at 5.8... It's not good to just keep upping the ec to try and get them taking more food.. If The Ec drops from say 1.4 to 1.2 in 24 hours, then you can up the feed to 1.5ec...

Hope that helps a bit mate..

Rhitzo is for vegetation period only.. Drop it at 2 weeks of 12/12 when you switch to flower nutrients.

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[GYO]

thanks guys so much for your help and input. I just checked in the the ph has started to rise and the EC has stayed the same so fingers crossed it might be ok.....
Ill check in the morning and update
really appreciate the help and thanks B.A for the tip on the rhizo will leave out for the next res change.

thanks guys Big Love!

[B.A.BARACUS]

thanks guys so much for your help and input. I just checked in the the ph has started to rise and the EC has stayed the same so fingers crossed it might be ok.....
Ill check in the morning and update
really appreciate the help and thanks B.A for the tip on the rhizo will leave out for the next res change.

thanks guys Big Love!

You're welcome mate.. Let us know how you get on... Good luck

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[British green]

While this was going on was they still drinking . How big is your res and how much do they drink . In the period of time your measuring ec/ph . Other than that follow on with ba's advice

sent from mission control

[GYO]

thanks man res is 200L I'm running 6 pot system with 1 header tank. make up 200L and half goes in the rdwc and the other left in the res to top up. they drink about 15 - 20L a day but its hard to tell as there is no measurments on the res, any way of telling? I just know half full is 100L. I measure just before lights out and normally an hour after lights on. but have been going in half way (Lights out) once this problem started.

Thanks again for any input :-)

[redisiel]

1 bit of advice which helped me loads is mark the res somehow as your filling it I done mine at evry 10 liters because 5 litres don't even really look like its gone up then it will make things a lot easier mate
Hope the get feeding soon
Redz