Relationship between Reservoir size and nutrient concentration

Relationship between Reservoir size and nutrient concentration

Hello growers.

I'm on my first hydroponic (rDWC) journey and still have many questions and problems arising, learning every step of the way.

Lets picture the following scenario to better understand this questioning:
Imagine two systems
One that holds 40 gallons in total with only 4 plants.
One that holds 20 gallons in total with only 4 plants.

Now lets say you run your nutrients with 500ppm on each, same dilution.

Is it possible to assume that the 40 gallon system will potentially burn your plants when the 20 gallon system doesn't ?

Ok, you have the same concentration on both, but on the 40 gallon the plant has more available due to the larger volume, and even though it drinks at the same concentration, it drinks more and more without ever bringing the EC/ppm down due to the higher availability.

Do you see where I am going? Does it make sense?

I run bio buckets. pretty much set it and forget it, for me. I love them. basically plants only need 3 quarts of nutes solution for every Sq /ft of CANOPY. I learned soon much from this thread:
https://www.icmag.com/ic/showthread.php?t=23357
this thread (and bigtokes bio bucket sticky) contains a ton of info that all hydro growers should know

cm

The larger the res the smaller the swings. PPM is PPM whether it's a lake or a bucket of water from that lake.

Let's say you wanna feed your plants 20/20/20 at what ever PPM. Your PPM will stay closer to your initial reading for a longer period of time as well as your NPK ratios. Same goes for PH and temp too. Less fluctuations all around. Without getting ridiculous, the larger the res the better.