So - guys, help me out here - I've got a LITTLE cyno going on, but mostly am battling hair algae. Finally caved in last Saturday (8 days ago) and bought a small bottle of PhosGuard from the LFS. Seems to helping alot - but my questions are: it looks like the hair algae has died - but now I have these long threads of creepy stuff - what I believe is dead hair algae. I assume I need to scrape this off and remove? Also - the bottle says to 1 cup for every 75-100 gallons, put it in a filter bag and replace every 4 days - which I did - but are they saying this so I have to buy more - or does it last much longer? Also - do I continue with this indefinitely, or once I've got things cleared can I stop the treatment? Are there better phos-ban products out there than this? They all appear to be the same thing, but you guys know best...