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is this ok to use in hydro Hanna Instruments TDS Meter - TDS-EZ 0-9990 ppm - eBay (item 260288034078 end time Nov-14-08 20:20:17 PST) just checking before i purchase 1 thanks for any replies. :blsmoke:

I think it is the best place to ask questions give answers & try your best to remember all what you've red & understand. this is just me sending :peace: & :hug: too only those that love RIU. this here is for all you haters & smart a*ses out there :finger:... so to all you...

How many lumens can you have in a room (13 ft - 9" long) (2 ft - 4" wide)(8ft high) (how many square ft would this equal out to be - rough estimate would be great - ) 30 plants hydro. :idea:

just saying hello been doing alot of reading some good some bad but as for info on the erb that makes a difference this has to be the best site everbongsmilie