What is it pulling out that your plants want? This is not true.The reason I said not planted is because carbon can pull stuff out of the water that your plants would want to absorb.
The carbon about 1/2 gallon, is first washed in tap water repeatedly until little to no visible residue is washed up then completely dried in a net stocking low humidity. Then soaked in RO water DI better with 10% WDV for 2 days.
Then drained quickly and placed wet in a microwave over on high for 40 minutes. The water inside the thousands of passages inside the carbon begin to super boil and pressurize to tremendous pressures. You will hear it hissing and popping and sparking blowing off steam everywhere around the oven. Once the volatility stops the recharge is complete. DO NOT open the microwave mid cycle no matter how many sparks, steam or noises you hear or you will disrupt the boil off have to start over again.
I just tested my water yesterday and everything was fine. Ammonia, Nitrate, and Nitrite all zero. But thats just my take on things.
What is 10 % WDV? I dunno, 40 minutes in the microwave, ro di water, etc etc. Are you really saving any money when you consider the power used, the waste water produced and the wear and tear on the microwave?
I have done the microwave treatment sans the ro di water and let me tell you that outside is a must as it stinks to high heaven.
Considering I can buy a scant gallon of virgin activated carbon for 9 bucks, how much would I be saving if the time involved had any value?
.carbon looses its effectiveness as filter in 3 months, it remains a very powerful and potent bacteria warehouse
Since carbon is such a good bacteria warehouse, would this not REALLY throw off your cycle when you change the carbon insert?