How To Use Progressive Web App aka PWA On 420 Magazine Forum
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My tub has a drain I installed on the end down low with a 3/4 inch hose on it. come time to do nute change overs and or flushes I can drain the system into another container of equal or larger holding size and then add new liquids thru the top of the tub cover. I use a bathtub stopper to cover the hole in the tub lid so light stays out when it is not open for liquids replenishments. My plants lid will not be moved except for root inspection or for the harvest. You definitely need to install a drain of some sort into the lowest area of the tub so you can change out your liquids without stressing your ladies