RDWC - Quick question on how to measure nutrients

J

jshrooms

Member
When measuring nutes for an RDWC system and you are suppose to say put 2.5ml of floraGRO for every gallon.

Do you measure by how many gallons are in the entire system? Say a 20 gallon reservoir and 4, 5 gallon buckets which totals 40 gallons in the entire system.

So it would be 2.5ml x 40?

Or do you measure by the size of your reservoir alone?
 
I have a type of ebb and flow system that circulates 24/7 and I take total volume of water and mix accordingly. Im a real nube so hopefully some others chime in 😀.
 
did no one read?

Im asking when you add nutrients, do you add them by the amount of water in the entire system or the amount of water in your reservoir?????????? (RDWC)
 
jshrooms said:
did no one read?

Im asking when you add nutrients, do you add them by the amount of water in the entire system or the amount of water in your reservoir?????????? (RDWC)
Click to expand...
Well ummm yes! I did read the post. perhaps i wasnt clear. So I'll try again, ummm yes total volume. The others were just saying that better to measure tds as opposed to adding according to amount of water cause it'll probably be too much nutes. Typically a mistake all (myself included) nubes make at first.
 
If using an RDWC system then you realistically need a way to test nutrient strength and pH.

You can gauge how the plants are feeding by measuring your reservoir every 24hours.

Upward shift in ppm/TDS/EC means you're feeding too strong.

A downward shift indicates the plants can be feed a little more nutrients.

But when measuring your nutrients for the water, you take into account ALL of the water within your system.



J
 
jondamon said:
If using an RDWC system then you realistically need a way to test nutrient strength and pH.

You can gauge how the plants are feeding by measuring your reservoir every 24hours.

Upward shift in ppm/TDS/EC means you're feeding too strong.

A downward shift indicates the plants can be feed a little more nutrients.

But when measuring your nutrients for the water, you take into account ALL of the water within your system.



J
Click to expand...

Also make sure to monitor the PH especially when your TDS drops considerably, most likely your PH will drop with it.
 
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