5BY5LEC
Well-Known Member
Hey all. I am running an 4 site RDWC holding about 19 gallons of water. First grow, just built the system.
Here lately my water has been going down and so have my PPMs. I have a chiller and using bennies so I am trying to go two weeks between changes.
My addback method:
I started at 400ppm. Today I am at 340. This means the plants ate 60ppm's or 15% from where I started.
I originally added 33ml each of GH Trio to the 18 gallons.
15% of my original 33ml is 4.9ml or so.
Add 4.9ml of each to whatever amount of water the plants have used and dump it back it. Repeat every few days.
Is this a viable method to use for my grow or am I understanding something wrong? Alot of people say to add water but I hate watching my PPM's drop when I add water. About to try this tonight for the first time. Thanks!
Here lately my water has been going down and so have my PPMs. I have a chiller and using bennies so I am trying to go two weeks between changes.
My addback method:
I started at 400ppm. Today I am at 340. This means the plants ate 60ppm's or 15% from where I started.
I originally added 33ml each of GH Trio to the 18 gallons.
15% of my original 33ml is 4.9ml or so.
Add 4.9ml of each to whatever amount of water the plants have used and dump it back it. Repeat every few days.
Is this a viable method to use for my grow or am I understanding something wrong? Alot of people say to add water but I hate watching my PPM's drop when I add water. About to try this tonight for the first time. Thanks!