I’m near the end of my fishless cycle of a 5 gallon tank and my tank looks so nasty. I’ve been trying to wipe of the glass and everything but it’s so gross still. I’m thinking of getting a nerite snail to help with this problem before putting a betta fish in there. My question is...can I put a nerite snail in there before the cycle is finished? I did a partial water change today and after the water change the ammonia was at 0.25, nitrites were at 0.25, and nitrates were at 5 ppm.