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Welcome to Houston! Make sure you bring a generator for next season :wave:!

Water from the tap is ~450 uS and 8 dKH:drinkers:.
 

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Bunbuku, you'll have to forgive me, I don't know what ~450uS means. But I'm guessing it means alot of dissolved minerals? Anyway, I DO plan on using tap water. Are there any plants I should AVOID (besides Erio and Tonina, I'm not brave enough to try those anyway) ?
Yes that is the measurement from my TDS meter (442 mode) this website http://www.hydroponicequipment.com/infopages/tds.shtml converts it to ~300 ppm. Using Amazonia should help.

I have an RO/DI system and since I only have 2 tanks, a 6 gallon Tetra and an ADA60P, it works out OK for me. I add either Kent R/O right for GH only or some of the "reject" water (which has been sediment/carbon filtered) to increase GH/KH.

Luis and ADG uses only tap water and their tanks are fabulous. I don't recall seeing any Erios/Tonnia in them.
 
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