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Originally Posted by StirCrazy
there has been some reports of lanthanum chloride affecting Tangs of the genus Zebrasoma. any experience with this ?
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I have been using Foz down in my system for at least 3 years. There is a 5yr old Purple Sailfin Tang in the tank with no HLLE. I have 3 Yellow Sailfin Tangs in the system as well and they have no HLLE. I use Foz Down on a tank with 2 Pacific Sailfin Tangs with no HLLE. There are many factors that contribute to HLLE. HLLE was around a long time before Foz Down ever came out. People have used Metronizadole to cure HLLE so it sounds like it's a parasite and not a water condition. I suspect poor water conditions will contribute to a fish getting HLLE.
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Originally Posted by StirCrazy
plus there are some other inherent problem like removing the resultant flocculent and the potential for deposits on equipment and tank sides, which reportably is very hard to remove from the glass and causes problems with the impellers in pumps.
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I don't bother removing the flocs but I do clean the sump every 6 months. I suspect the worry about flocs is just a fear of the unknown.
Hard Calcium deposits on the heaters, magnetic impellers and occasionally the glass is caused by an unbalanced buffering system. Usually the Calcium is too high. If you keep your Magnesium at at least 1350 or 3 times the Calcium level the precipitation should stop. If it doesn't then raise the Magnesium slowly until it does. Then correct the issue that is causing the imbalance. The buildup is very hard to remove but the Mag Float Scrape works very well on glass only. You must use extreme caution as it will easily scratch glass if you get sand or grit caught in it. Deposits on impellers and heaters can be removed with vinegar or diluted Muriatic Acid. Muriatic Acid is very nasty so extreme caution is recommended.
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Originally Posted by Reefwars
Assuming your socks never overflow then wouldn't be a problem , but if it doesn't then precipitate will make it through , I also I should note that it's recommended to use a 10 micron sock while most in our hobby are 200 micron
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If a person absolutely must remove the flocs then a 10 micron sock is recommended. I sent some to Reef Supply Canada a while ago so he may still have some available. The best way to use a filter sock is to have a small pump put water through the sock and a doser adds the diluted Foz Down into the top. If you don't have a doser available then you can add Foz Down into the ATO reservoir and put the ATO line into the filter sock.
If you have any questions please feel free to PM me.
Cheers,
Tim