Cinnebuns

This would be better asked making your own post rather than bumping a post over a year old. That way you can get feedback specific to you while not hijacking another post.

Guppies grow very fast. Some become sexually mature as early as 6 weeks.

Alright this is what I've narrowed it down to: 1. Female betta instead of male 2. Dwarf rasbora (axlerod or chili probably) and possibly Thai micro crabs 3. 2 CPO? would that work here? 4. Licorice or sparkling gourami Anyone experienced with CPO or Thai micro crabs can weigh in on if this would work? I do have driftwood in the tank at an angle which would supply more space to walk on vertically. @NOLANANO I know you and I have talked about CPO before. What are your thoughts?

They are also able to just give birth to a few at a time. It's possible she's doing this and they are getting eaten.

Oh! Licorice gourami is a cool suggestion.

When I think active with color I think of guppies. A 55 is large enough to do other fish along with guppies. You could do some gourami for fry control. Maybe some cories in the bottom. I 2nd this

They are able to abort and reabsorb the fry without giving birth. They often do this if they are stressed. Occasionally one will do it regardless of anything over and over. I think these just don't want to be mothers or something. They are a strong independent woman.

Pearl gourami are very shy. It could be getting used to the new tank.

I forgot about chili rasboras. Guppies i would never put in a tank this size though. They are too active.

Any non-betta ideas for a 6.7 gallon half-moon? It's on my computer desk. I have had a couple of bettas in it but I'm considering changing it up. Pea puffers need more space? Shrimp might work possibly. I tend to like active or personable fish. I know the small tank means active is out. Idk I might have to just stick to a betta right?

She does have eggs. If she releases them they won't be fertile since you don't have males. Cherry barbs really should be in a group.

If you mean can you over clean and therefore kill beneficial bacteria then the answer is yes. In that case though then you would show ammonia.

I agree with both comments so far. The one problem I do see is your ph is dangerous for any snail. Acidic water will eat away at their shells causing rot over time. This will cause their nice shells to become pitted. Hopefully that crushed coral will help raise your PH. Do it slowly. Don't rush it. Changing PH too quickly will kill the animals. I do agree that it's best to check if that new growth is thin. That is A LOT of growth for 1 week. When they grow quickly, their shell becomes thin. What temp are you keeping them at? If the temp is too high then they grow too fast to keep their shells healthy.

It all comes down to goals. If you want to line breed the highest quality fish then yes 8-10 tanks is needed. If you want to still do high quality but you don't care to make thm as perfect as possible, then 4 is completely fine. I did 4 tanks when I was breeding guppies. You can still do some selection in your breeding with 4 but you may run into issues in later generations because you aren't able to cross as much. That's not a major issue though if you aren't expecting perfection. It's all about expectations and goals.

Diatoms. Brown algae. Very common in new tanks or the addition of new decor. It will get better over time and as the nutrients are consumed. Get a nerite snail to help. They LOVE diatom algae!!