Posted: Thu Jul 31, 2008 11:24 am
They are not necessary but do help if you want to kill pathogens and algae in the water. Daniel (if I remember right) had a pretty serious algae issue at one time. I would consider them if
(1) you have a tank with fish (not feeders but fish you want to keep healthy)
(2) you have serious bug or algae problems
They just conveniently help sterilize the water. I have only heard of a few folks on the forum mention that have them. In a situation where you are just setting up the tank getting everything else in order, I would put this way back on the list of "tank toys" to get. They are not that cheap and if you keep the conditions of the tank clean, dont introduce a lot of new animals, then you shouldnt have use for one.
Mom to:
1 RES - Tuck
3 Cats - Max, Theo, & Smokey
Lots of mollies and platies
1 Pleco - Spot
1 brand new betta
AND
2 very wild and creative 6 year old humans!