Tyler, I can't stress enough the importance of strong circulation as you cycle.
What I meant by the snail comment was that snails themselves can create a significant bioload. If added in disproportionate numbers(something that shouldn't be a huge issue in such a large tank if you don't add gaggles at once).
Some people will say you will go through a "mini-cycle" each time you add any type of bioload. However, if you do it slowly, there should be no mini-cycles at all(or there will be one, but your bacteria , detrivores, micro-infauna/filtration will have developed to the point that they will quickly erradicate the waste- nitrite and nitrate should remain 0 in this condition.
You have algae because you are using rock out of a tank that had algae. You should develop diatoms somewhere around week 4-5 of of your cycling. The algae that you have may be a bit prolific while you cycle, but it should die off significantly as your nutrients go down. In essence, you won't need to feed the tank...at all...for a number of weeks.
In other words- don't put in too many snails and crabs too quicly....you'll just have unhappy snails and an increased bioload on an already cycling tank...it will actually make your algae worse...and your diatom stage will probably take longer to dissipate.
PS- great tip you gave me on the Aiptasia at the meeting. Using a turkey baster instead of a syringe actually worked better as it was able to get the heavy salinity/calc solution deep into the rock..
