HI Fish Lore! This is my first post ever on an aquarium forum so I hope you welcome me with open arms. Anyways, I recently bought a 20 gallon long tank with a Marineland filter for 20-30 gallons. I am thinking of putting quite a few pounds of lava rock along with various types of plants. The fish I'm planning on keeping include one male betta (he's pretty chill with others), around 20 ghost shrimp, 3 otos, and of course the KuhlI Loach. Based on these other fishes, how many should I get? The filter, by the way, is strong enough to have the tank cycled 7 times per hour. Would adding KuhlI be overstocking? Thanks guys!