actually if you are still cycling you should NOT do water changes. Water changes, because you only have access to tap water, only adds more phosphates and nutrients to the water for the algae to feed off of. Doing water changes even with RO
water will prolong the cycle as the high levels of the other elements are whats needed for the cycle to progress. You mentioned you also did a rather large water change... the same day as the hockey game? I'm thinking the water change just preceding the longer lighting that the tank was acustomed to is what caused your bloom.
here's my suggestions:
no more water changes until your ammonia = 0 and nitrites = 0. At this point your nitrates will still be high but those are the slowest to come down and this is the last stage of the cycle, which is when you should do your first water change.
do you have access to a large super market? if so, they often sell distilled or RO
water by the gallon. check out the cost and see if it's feasible for you. If so, I would highly recomend using that over tap water. You can also check with your LFS
, they often sell RO
water rather cheaply.
Put your lights on a timer so they are on for a couple hours when you are typicaly in the room. This will give you some peekaboo time while ensuring they're not on too long.