Rdwc water flow

[Bobb11]

G'day all

I had some success with my dwc first grow. Now I have set up a three 20lt bucket system

The res is a 120 lt container with 20mm pipe going in to the buckets then drops down to a 15mm pipe going into a 480 lt/ h pump

Now the question is I have this pump and one other that is 4500 lt/h what would be the best flow rate to have, or do I need a different pump

[Naycha]

Is this an undercurrent system or top feed recirc? If top feed what size are the return lines?

 

You will need very large return lines to cope with high flow. Just set the system up to test the small pump and see how that goes.

 

Pics are handy too.

[Bobb11]

It's a undercurrent system it will be done in a couple days .

I will take some pic then

[Enayahton]

Some pics will be good. It is also interesing for me.

[Bobb11]

Ok I have just finished my set up rdwc

http://images.tapatalk-cdn.com/15/10/19/7aa211acb07c3e04fba825c12a6fead8.jpg

I have 480 lt pump that's seems to be going well

http://images.tapatalk-cdn.com/15/10/19/be1175959a2cc53a0c3b8afff779f6a6.jpg.

A bit of air

http://images.tapatalk-cdn.com/15/10/19/2a02e2d6fe82ad32fab76c078d72a393.jpg.

http://images.tapatalk-cdn.com/15/10/19/eeca2da9cf610f3a8acae2afebca1587.jpg.

http://images.tapatalk-cdn.com/15/10/19/1abfc12df697308e8614f28cfa653505.jpg.

Had to buy one

That's the set up

[Jafae]

Good setup. Good job.

[Bobb11]

Ok now the system is running

I have three plants in 1 AK 48 and two hash bombs

I'am using the DM gold range grow .27 root zone and silica

The question I have to the wise ones is the ppm I have for week old is 220 is this ok http://images.tapatalk-cdn.com/15/10/21/69644d1dc1494d4a48980ee98d748a27.jpg.

 

The ph is a bit on the high side I think

The temp is ok as the res is ran by a aquarium chiller

I am drip feeding the girls until the roots establish them selfs

http://images.tapatalk-cdn.com/15/10/21/02a203ee5e74c567a61d453a0ed5c592.jpg.

As it is RDWC undercurrent just need to know is this ok

Edited October 22, 2015 by Bobb11

[Bobb11]

Could someone tell me why my PH keeps going up I put about 1ml of hydrochloric acid in a day it drops it down from 6.5 to 6 then , then the next day it's back to 6.4 to 6.5 . I can't understand why

Cheers

[Light Philosopher]

I've read that aeration using airstones can raise the ph level of solution, but that seems to be inconclusive.

[Bobb11]

Ok I will drop one off today as I have two running and see what happens