[OCT 2021: Version 2 released. Stage 1 Carbon has been replaced by Chlorine Removal Beads (CaSO3). New Stage 1 is now more effective against Chlorine/Chloramine and last twice longer than normal Carbon.] [Many sets sold. 100% satisfaction for all who are using. New Sets TDS is < 5. Usually used by Marine/Reef or Caridina Hobbyist] ✅ Simple plug and play set. Instructions provided. Different tap attachment included. ✅ Chlorine Removal Beads (CaSO3) > Reverse Osmosis > De-Ionized Resin > perfect water for your aquarium needs. ✅ Removes metals and other impurities from your tap water. TDS 0 - 5. (Depending on flow rate, age of filter and TDS pen accuracy) ✅ 125G model [10 - 14L/h, similar to fast dripping] or 400G model [30-40L/h, similar to smooth gentle flow]. No need booster and electrical power, can keep/install in bathroom. 👍🏻 Included in the standard Set: 1) Chlorine Removal Beads (CaSO3) [New V2 Models] 2) RO case + new 125G/400G membrane 3) DI Resin in Filter Case 4) 5m 1/4” white tubing 5) Adapter to Tap included(4 types, refer to pic 1/2” bidet, 1/2” shower tap, washing machine tap, universal adapter) Optional Accessories (Check out accessory bundles) 1. inline TDS meter 2.TDS Pen 👍🏻 [3 month warranty. 1 to 1 exchange on parts that fail/leak.] #rodi #tds #filter #shrimps #marine #125G #400G