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Gotta try getting that down towards 200. Do you use tap water for water changes? What TDS do you get from your source water?

Hi Team, So here is the list of what has been purchased 900x400x200 PPG starphire glass rimless tank (custom build) 10mm glass Flat one ONF+ warm white 60 cm pendant light (rated for 17 to 20 gallons - so hopefully can put it high and it will be bright enough! - the 90cm is rated for 40 to 48 gallons) Eheim ecco 130 filter Seachem Matrix (for the filter) DOOA Stream Pipe ARC P-2 (13mm) DOOA Stream Pipe V-1 (13, H15mm) ADA power sand advance 2 kg ADA amazonia fine granules 9L ADA amazonia II (with extras) 9L ADA cube garden mat 8mm 900x450 ( will have to trim it) Seachem flourishm liquid fertiliser I think other than some tweezers and curved scissors that is it so far.. I will start to post pics when the tank arrives! Thanks and have a great day sub

Wow, that high for water straight out of the tap. By comparison, my tap water is ~80 TDS. Yes, you should do more water changes, but with tap water at about 180TDS, the best you can do is to get it nearer 200. Which is close to what the Neo shrimps like. Simon has given you a solution using 'Zerowater filters', but you could also try rainwater. Collect as much as you can and use that for water changes. Or you can get an RO unit. The cheap solution is rainwater. You can get to around 200 with tapwater but it will take a while. If you do regular 10% changes, than increasing it to 20% water changes as Simon advised will help you get to a lower TDS faster. i wouldn't do more than 20% weekly changes.

The TDS The tds from the tap is 180 max from different faucets around the house. Should i do more WCs? Someone on facebook said i could add carbon to my filter. I have some from when i treated the tank for Hydra.

Update: tds in water is 306 ppm. i got a high range ph test the pH is likely 7.2-7.4 as it does not seem to exceed 7.4 Ill make sure any new shrimp going forward are drip aclimates for hours ?

Not drip acclimating is a very common newbie error, did it myself a few times when I started with shrimps! For better survival rates, short AND long term you need to drip acclimate them over a number of hours. Simon