The ones you have mentioned are caulerpa species of macro algae which are not very recommended food sources for herbavors except the sea lettuce (Ulva sp.
). Caulerpa's will often contain natural toxins that can affect the health of fish over time. If available, I would suggest chaetomorpha
, brush algae (Penicillus sp.
) although slow growing or possibley red algaes (Gracilaria sp.
). Those will be much more beneficial.
You may need to "prune out" a majority of the fern and grape though. They will compete with the newly added ones for nutrient and may result in their loss. The ones I mentioned are also a little less hardy than the caulerpa's in the beginning and should be acclimated similarly to an invert. They will react negatively to drastic changes in salinity, ph
and temp. Once established though, they will do quite well.