Question about RDWC addback

5BY5LEC

Well-Known Member
Damn, you are like the 10th person to tell me that. When I start telling myself that it is not long before I buy said piece of equipment.
I would but I don't want to change anything at this point. If I can get addbacks down I will start lugging jugs from the wally world, since I can make the water last much longer. RO next grow for sure if not this one.
 

Airwalker16

Well-Known Member
Damn, you are like the 10th person to tell me that. When I start telling myself that it is not long before I buy said piece of equipment.
I would but I don't want to change anything at this point. If I can get addbacks down I will start lugging jugs from the wally world, since I can make the water last much longer. RO next grow for sure if not this one.
Its better to just buy an underundersink one off Amazon for less than $150
 

Larry3215

Well-Known Member
If the EC/PPM is increasing as the water drops, that means the plants are not using all the nutes available. In other words, your EC/PPM is too hi.

In an ideal setting, the EC/PPM will not change as the plants drink.

If the EC/PPM is decreasing as the water level drops, then the opposite is true - your EC is too low.

Thats where the rule I posted earlier comes from.
 

5BY5LEC

Well-Known Member
I have been adding back nutes and these things just suck them right back down. I think in the last two days my PPM's dropped by 50ppm and my water is like 4 gallons low. I am gonna raise my PPMs to around 400-450 and see if that slows it down
 

NGA

Well-Known Member
In a normal world you feed your plants every time you add water , if there not eating the nutes something not right ,the most important thing is flushing in hydro and learning to do that right
 
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