I use the free Photoshop app to color correct photos.I bought that inexpensive app called aquarium cam. When u use the auto filter feature it dramatically improves aquarium photos, especially when actinic is involved.
If the auto filter setting is not spot on there are a few white balance sliders and a few color sliders available. I have been so pleased with this app I will not even try an aquarium photo without it.
Lastly I’ve found that google photos color and brightness tools are way superior to the ios editing tools so I do any minor edits after the fact in google photos.