Who Gives A Fish Forums

I periodically experiment with plants that supposedly require Co2. This one might just fit the bill. Do they come in a compact or dwarf variety? My specimen is extremely small with very deep, glossy green leaves - almost like a miniature version. Unlike the C. parva I grew years ago, this one has a much darker green hue and seems to be naturally smaller. I mean, small is relative, but you get the idea. It's possible the leaves are being nibbled, which could be stunting its growth. Your thoughts?

I think the issue is that these plants just grow really slow, and their size or color can be misleading. They might not necessarily need CO2, but it definitely gives them a boost. I've seen some photos that look like they're grown emersed, maybe it's still adapting and needs time to develop proper water leaves.

No dwarf form for this one.

As for CO2, it's not a requirement.

Small size likely just means it's still young and needs time to mature.

I'm running just basic stuff - fish poo for ferts and a natuflake light.

I've had decent success with Crypts in low-tech setups, they seem to thrive in those conditions. I think they can get by just fine without supplemental CO2. Growth might be slow either way, but I've found they tend to grow bigger and bushier in low-tech environments.

Different nurseries can produce different strains of the same plant, so it's possible that the Crypts you're remembering from years ago were from a different source, like Tropica or Denerle.