Reddit reviews Dow Filmtec, TW30-1812-100HR 100 GPD TFC High Rejection Membrane for Undersink Reverse Osmosis (RO) System

We found 2 Reddit comments about Dow Filmtec, TW30-1812-100HR 100 GPD TFC High Rejection Membrane for Undersink Reverse Osmosis (RO) System. Here are the top ones, ranked by their Reddit score.

Polyamide Thin-Film Composite (TFC)Rated at 50 psi and purifies about 20% more water than elements rated at 60 psiShipped dry for convenient and a long shelf lifeFree Chlorine Tolerance: <0.1 ppmDow genuine membrane element, NSF/ANSI Standard 58 certified

Check price on Amazon

2 Reddit comments about Dow Filmtec, TW30-1812-100HR 100 GPD TFC High Rejection Membrane for Undersink Reverse Osmosis (RO) System:

u/TheNomadicHermit · 8 pointsr/Autoflowers

What do you want to know?

I will give you 3 pointers if you buy this particular unit, though. I only bought this because it's the cheapest 4 stage you can get, and I know I don't need all the bells and whistles (in-line TDS, etc -except one that I will mention in part 2 below) that come with the ones that cost way more.

If you want to make serious quantities of water, and you don't have the patience of a saint, get THIS MEMBRANE and just keep the included 50gpd membrane as a spare. The dow filmtec membranes are the best you can get. They're the only ones that really produce anywhere close to their stated GPD rating. The 75GPD membrane is great too. Honestly it's just a more convenient, and longer lasting membrane either way. I've gone through a shitload of RO membranes. Whenever I need a replacement, the filmtec 75 is what I buy.
If you're installing it on a bathroom sink that has easily accessible male threading (after you remove the aerator), then get one of THESE. It's much easier to just divert the faucet water to your 1/4" tubing than having to detach and reattach the included plastic faucet adapter every time you want to make water. If you want to cut the faucet out of the picture altogether (my preferred method) then install a SADDLE VALVE straight to your 1/2" copper pipe (cold water pipe ONLY - never connect an RO/DI to hot water) and a SHUTOFF VALVE in-line between the pipe and your RO/DI's supply port. That's what I did today. Tapped into the copper pipe behind my bathroom sink; drilled a hole in the wall just above the sink and ran the tubing into the bathroom; installed shutoff valve there; drilled holes in undersink cabinet to accommodate supply, waste, and clean tubes; mounted the filter unit inside the undersink cabinet. Now I have a convenient on/off switch just above my bathroom sink. The tubing for waste and clean are coiled up between the cabinet and my tub. When I want to make water I just snake the waste line down my bathtub drain, pop my water sprayer in the tub and fill her up. No worries of spills/overflow. No hassle of connecting/disconnecting plastic fittings that are prone to thread strip.
Doesn't hurt to install a BACKFLUSH. This is the one 'bell and whistle' that I think is actually really useful. Especially if you have really hard water, It's good to flush heavy solids out of your membrane occasionally.

u/cfc1016 · 1 pointr/ReefTank

Even 1ppm TDS in your RODI water can contribute to dinoflagellate outbreak like that. THIS is the TDS meter I use, and have used for YEARS. It's simple to use. Doesn't require calibration. Batteries last for frikkin ever. Always test your RODI water.

Ever wonder why people who have bulkreefsupply RODI systems never complain about their water? The BRS units use DOW Filmtec membranes. It's the best RO membrane out there. Pair that up with a fresh change of resin in your DI chamber; backflush your system properlt; test your clean water to make sure it's at 0ppm TDS.

I would also strongly recommend only using food grade buckets for your clean water. This, or atleast another container that is thoroughly clean, and has never been used to hold anything BUT clean RODI water.

Cover all your bases on your water production, and I'll bet that after a water change or two, your dino outbreaks will fade.