100% all Amphiprion allardi. Chrysogaster very obvious, the tail will be rounded & the color is very very different. Probable time you will ever see them is from Mauritius shipment with Gem Tangs.
Ich free tank is possible. That's with strict quarantine on every new addition. Be it fish, corals, or rock. Corals & new rock go into a fishless system for 1-2 months before entering display aquarium.
Hi bro,
You may wish to consider to include a surface skimmer. You can either modify the intake of the canister or you may add in a hang-on filter with surface skimming capability.
For the diatoms if you are using tapwater you may wish to consider changing to distilled water or RO/DI water. Your diatoms will go away by themselves after this change.
Can be done but as with all cultures you need to put in time & effort to maintain it.
http://www.reefcentral.com/forums/showthread.php?t=1998205
http://reefcentral.net/forums/showthread.php?t=2030920
Should work in theory, faster growing algae like chaetomorpha can outcompete the unwanted hair/diatom algae for nutrients. The same principle is used for freshwater planted aquariums, it is advisable to grow faster growing plants in the beginning to outcompete nuisance algae when the tank is relatively new.