WeednFeed
New Member
Hi T2 - one problem with topping off with more nutes is that plants "cherry pick" the nutrients and take out certain nutrients and leaving others. If you keep adding more nutrients, you are potentially adding more of certain nutrients than the plant can take/need and the balance of nutrients in the reservoir gets out of wack - I'm not sure if I'm explaining this right - but that's the general gist. A ppm meter helps measure the total dissolved solids in the nutrient solution, but you don't really know what it's composed of so it's hard to only replenish the parts that need to be replenished.
IMHO it's better to only top off with more water if needed, and do weekly res. changes so that you're starting from a clean, known slate again. I personally like knowing where my PPM's are and find my TDS pen (PPM meter) very useful. Just my 2 cents worth!
Well spoken. I second that.