yea, but what are the numbers. "acceptable" really depends on perception and your target environment. some keep ultra low nutrients, some keep ~5-10 nitrate, some dont mind 40!, etc. basic stuff you need to check when something starts going weird is ammonia and nitrites. we always assume they are in cycle properly, but something might have caused it to break and restart. check phosphate, if its too high, things really dont like it. whats your salinity at? what did you use to measure it? do you run a skimmer or anything else for aeration? what is your top off water source? do you run any reactors? carbon/gfo/pellets/etc? what brand food are you using... etc. when was the last time you cleaned your pumps?..... basically... start from the beginning, assume nothing.
aside from snails/crabs.. what other livestock do you have?
i inherited that same light w/ my new 40g tank, ebay has the wifi adapter from 30-90bux. (i got mine for 45, gotta be patient and pounce). search for "fluval A3976" if you are going to buy a new light, dont go w/ a fluval if you dont have to... there are much better chinese black boxes that are a hell of a lot better, imho (i have a black box on my frag tank).
i dont have any torches in that tank yet, but the mushrooms and chalice look ok... havnt seen much growth (only been about 2-3 weeks now). in my main tank, the torches and hammers love brs reef chili and polyplab reefroids. sometimes its better to feed smaller amounts daily, as opposed to the full amount weekly.