Flatworms, wondering whether to treat or ignore.

[reeferaddict]

After reading an excellent article in the June/July Coral Magazine, I have decided not to treat again... I still have the little buggers in my tank, but have found nothing that suggests they will harm anything unlike Acro flatworms. The article DOES mention ways to treat, but also questions their effectiveness along with what microbial damage we may be doing to our tanks at the same time... Suggestions for biological control are things like 6 line and Leopard Wrasses, Copperband Butterflies and specialized flatworm eating nudibranchs... I have everything of those save the nudibranchs, and I DO notice all of those fish feasting on the odd one off the rocks from time to time... From what I have read in other articles and hobbyist experiences, the infestation seems to bloom and then subside. Phosphates and silicates are known to provide them with fuel, so limiting these nutrients is a chemical control option as well... My two treatments have cost $80 and a whole lot of work, (25% of 300 gallons is a LOT of water to make and change!!!), so I won't be doing it again unless I notice bad things happening...