Hello everyone, I'm a newbie when it comes to saltwater fish but, I've set up a 56gal tall tank with saltwater. It's a FO
set up, I have live sand and a Fluval 406 filter. I started the tank exactly 3 weeks ago and I have 4 damsels to start the cycle. I just did my first test and there is absolutely no ammonia, no nitrate and nitrite seems a hair less then 5ppm. I haven't done a water change obviously. I actually do two small feedings per day (mini pellets in the am, brine shrimp at night). The lights stay on from 2:30pm till 10:30pm. When should I start to do water changes?
Also, the temperature is not staying steady, I live on long island so around this time of the season the temperature outside at night is about 40 and goes up to high 60's during the day. So the temp in the house goes down to low 60's at night and up to low 70's during the day. The temp in the tank is 78during the day and goes down to 76 at night. The heater is brand new. How crucial is that 2 degree variance?
Last question, how many fish can I safely raise in a 56g tank and will the damsels be okay with some clowns and tangs?
Thank you everyone for your time in advance,