water is water, never try to change or add additives. What we want is clean water that suitable to drinks by removing contaminants only.

Look at the size you already know the effectiveness. Most POE are larger.

For condo, it depends on the management do they allow you to install POE. If you want, you can install something like above


External filter is to remove sediments, most condo already have POE at the main water tank. If your water is still very dirty then you can install a smaller one at your water entry point.

This post has been edited by oyching88: Apr 19 2017, 09:47 PM

Why not change a new better one? Diamond outdoor filter cause a lot of trouble, i have few relatives & friends use before, the after sales service is worst.

You need to backwash like once every week? This is the minimum recommended. Compared to sand media, you have to do most likely once every month.
The membrane is like a piece of "clothing" stuff, which is able to wash tends to break after 1 or 2 years which is shorter lifespan compared to sand media.
Clogging is the main issue, water pressure is high and the membrane type media clog more frequent.
The plastic housing of the filter also tends to crack easily which cause water leaking, if you happen to pass by any house/shop that use Diamond master filter, 5 out of 10 you can see water leakage.

Well, these are the problems that they told me previously.

This post has been edited by oyching88: May 3 2017, 10:34 PM

Yeah, cause it really have a lot of issues so not many wanna take it although it's quite cheap.
Water leaking can be a serious issue, once it leak can lead to many other problems like bursting, water bill increase, flood, etc.
Sand media type and membrane don't remove chlorine, only carbon based filter can remove chlorine. You don't have to worry the sand media will go into your in house water system, it's not an issue at all.
For POE, the most important is the durability and the vessel material. Steel type maybe ideal but sometimes if the workmanship is not good, the welding joint can deteriorate by time and cause leakage. One piece non weld without joint is always better. Also the material of the vessel if can prevent sun light exposure to inner part is best which can prevent algae formation inside.

This post has been edited by oyching88: May 4 2017, 05:01 PM

It might be US technology but parts by different supplier, who knows? Except you are someone inside the company.
Buy those OEM products rather than those local or unknown brands if you are doubt of their claims.