That guy was soooo high when he replied to your question. Whats the connection between a steering wheel and driving fast?

Anyway, I'll try and answer your question about the TDS meter. There are two schools of thought of ppm about whether it should rise every day or fall every day. Until that is resolved what is the importance of the meter? Just follow the directions on the bottles for mixing and watch how your plants react. If your burning them, then back off a bit.

You should change every 7 days. The plants drink well and you want to give them more nutes.
herbie the love bud Reviewed by herbie the love bud on . Air/PPM questions I am waiting for my light and a few other things to come in and i will start my first grow...I have 2-18 gallon rubbermaids set up holding 4 plants a peice... My plan is to do a grow journal and wait too see the sex before desiding how to split the females between the rubbermaids.... I have some concerns on my grow... I have everything for growing other than a ec meter.. how needed is this? would i be able to survive if i was let my tap water sit out about 24 hours before adding nutriants Rating: 5