I don't have any personal experience to draw on regarding Sand filters but I will tell you what I am told about them, and you can perhaps make up your own mind:-
Pros:
1. Remove fine paricles from water.
2. Good biological growth properties.
3. Can be backwashed.
Cons:
1. Prone to blockages.
2. They favour anaerobic bacteria (very bad this one)
3. Backwashing oftens in-efficient
4. Need daily backwashing to prevent number 2.
I think the cons outweigh the pros. What do you think?
Posted on Apr 27, 2005, 1:15 AM from IP address 213.120.101.21