Those DIY filters work great for a little bit. If u intend on using it for a large amount of water it won't be worth the cost. Most RO Systems get the cost per gallon down to $.08-$.12 cents per gallon, Stand alone filters $.18-$.25 Brita Jug Filters are around $.25per gal....
These prices figure in filter cost, water waste and estimate water cost based on national average
Its filtered water.
Just buy a standalone filter set up.
I just got one for $50 filters down to 0.5 micron. But read the labels and price out the filters. I see a lot that are 5 micron.
I just bought an RO Filter for $90 shipped I have been researching them for a long time and this is the best I could find.
Filter cost is often overlooked!
I just wanted to remind people that it is better to just pay the money at the beginning and save later. I have relearned that lesson over and over (especially with growing)!!!