Recommedation on DI Unit

[Noddy]

Hi,

Planning to get a DI unit for water top-up. If i am not wrong there are basically 2 type in the market.

1) DI cartridges that need replacement - Expensive if too much topup is require.

2) DI unit that are rechargeable -Rechargeable Cation-Anion resins.

I believed type # 2 will be more economical in the long run. Coorect me if i am wrong

Therefore, anyone can recommend me where to get the rechargeable type. (beside aquatechnic one which is EX)

[May&Bruce]

Check out this thread.

http://www.sgreefclub.com/forum/index.php?showtopic=42927