Started fishless cycle 2 months ago. 10 gallon and 37 gallon tanks. Both cycled (I thought). I added 4 small mollies to the 10 gallon. All was good for a week. Added 3 guppies, 2 snail's, and 2 yoyo loaches.. had a slight ammonia spike. Added ammolock. It has all been down hill since! Ammonia...