Or you can deal with the 'droids when they show up, OR treat the tank with light dose of fenbendazole (Panacur/Safe Guard).
The only downside of treating the tank, would be the fact that you won't be able to keep any inverts in the tank, but since you're going for a "sterile" setup, it doesn't matter.
More and more folks are trying to get away from sterile setups for zots, but when I read that you're running all fake stuff, I assumed you were going for that type of thing. If that's not the case, just disregard my posts.
Here are the treatment protocols for both crystals and liquid...the liquid is much easier to use (courtesy of "that nameless SH site"):
FENBENDAZOLE (granules) Dosage and Preparation Instructions Hydroids
Active Ingredient: Fenbendazole
Indication: hydroids
Brand Names: Panacur, Safe-Guard
Note: This treatment is ONLY recommended for Seahorse fry nurseries and Dwarf Seahorse tanks that
do NOT contain invertebrates/corals. (Nassarius sp. snails have been known to survive treatment).
Residual effects of this medication may make the tank inhospitable for invertebrates for up to two years
following treatment.
Dose at 1mg per gallon for light infestations.
Dose 2mg per gallon for heavy infestations.
Repeat every other day for three treatments.
• Purchase Fenbendazole granules available as 1gm packets.
• Thoroughly mix a single 1gm packet into 100ml of water. (100ml is equal to a little less than 1/2 cup).
Please note that the granules will not completely dissolve.
• This mixture will produce 2.22mg of Fenbendazole per ml.
FENBENDAZOLE (liquid) Dosage and Preparation Instructions for Hydroids
Active Ingredient: 10% Fenbendazole suspension
Indication: hydroids
Brand Names: Panacur, Safe-Guard
Note: This treatment is ONLY recommended for Seahorse fry nurseries and Dwarf Seahorse tanks that
do NOT contain invertebrates/corals. (Nassarius sp. snails have been known to survive treatment).
Residual effects of this medication may make the tank inhospitable for invertebrates for up to two years
following treatment.
Dose 1mg per gallon (0.1 ml per 10 gal) for light infestations.
Dose 2mg per gallon (0.2 ml per 10 gal) for heavy infestations.
Repeat every other day for three treatments.