I'm not sure about the thickness but my cannabis plants love it! Really easy to install. I use it to fill up my main water tank which holds 300 gallons and it does the job perfectly. TDS is 5 and starts at around 330 TDS, this is well water so it varies depending on how much farmers pull from the ground. The only problem I had was that in my greenhouse the heating went out and the outside temperature was around 7, luckily we had just harvested. The activated carbon filter and 2 pre-membrane filters have frozen and burst. I emailed them asking them to buy new ones because it was totally my fault and they sent me 2 filter housings under warranty! I will definitely be staying with them if I have other water needs in the future and will call Richard if I need any help!
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