Don't use tap water

20180113:

• made first 10 gallons of 0 TDS water.
• purchased filter refills ~$25 and another DI column ~$20.
• Installed DI column and pressure gauge and check valve.

20181230:

• installed RO system
• Before: 112ppm TDS
• After: 3ppm TDS
• Need check valve (one way) to add DI column (between DI and RO and tap/reservoir/CTO filter).
• Aquatic Life Spot-Free Car Rinse Unit & Dual Deionization Systems for Aquariums, $65

20180622: set up

AmQuel treated tap water