I have 6 Cory catfish 6 endlers and 2 guppies is my tank to overstocked in this 20gal high?

I know it’s kinda yellow it’s before I did a water change

Posted by Additional_Fee6371

4 Comments

  1. Guppies are shoaling fish so they should be kept in groups of 6+ just like the others. It’s a fine stocking list aside from that. What does this have to do with oxygen? Looks like there’s an airstone so that isn’t an issue

  2. Not overstocked at all. That’s actually a really solid stocking list for a 20-gallon high. The corydoras have their own space at the bottom, and the endlers and guppies have a super low bioload for the mid and upper levels. You could even get some more guppies.

    Also, don’t sweat the yellow water. That’s just tannins leaching from that piece of driftwood. It’s completely natural, harmless, and your fish actually like the natural vibe over completely clear water. I’d say there’s no need to worry 🙂

  3. I don’t think you’re overstocked, in fact it’s better to have schools of 6+ for guppies, they feel safer in groups. But your water level looks a little low. The wood tannins cause the water to be yellow, but it’s actually good for the tank.

  4. I definitely don’t think you would be overstocked if you added some more guppies.

    You might also see if someone in a group is giving away some floating plants, I recommend salvia and water lettuce. Duck weed is very common but it’s small and not my favorite. Giving the fish a little cover helps them feel better.

    How are your water parameters? What kind of light do you have and what’s the timer schedule?

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