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So I'm looking for a continuous pH/TDS/Temp meter and ran into the: HI 991404 and HI 981504. From the looks of it they both do exactly what I want, with the later supporting digital ballasts (something about electrical interference). But with the e-ballast stuff out of the way... which is best...

So I finally got my RO unit all setup and made 20 gallons of water. Both my TDS meters read 5~7ppm's. I started with 100ppm of CalMag+ then started to add Canna Aqua Vega until I reached about 400ppm. Next I used my pH meters (i have 2 for verification) and both read around 4.2pH... The RO water...

So I've been a long time coco grower and just setup a RDWC setup. I'm nearly out of Rhizotonic and have heard great things about Roots Excel. I don't really want to buy both since they cost so dang much. What would you guys do? Buy more Rhizo or Roots Excel... btw I do use H2O2, but I swear...

Hello everyone, this is my first post! I just planted a DinaFem Fruit Automatic bean inside a rapid rooter w/ hydroton. Currently she'll be sitting in a plant tray with more hydroton and water to keep the rapid rooter moist. I will be vegging and flowering under Quantum Badboys 6 lamp T5HO...