[JVorhe212]

how ofter should i do water changes and what should the calcium level be to support coraline growth and does the lighting help.... like should the blue bulbs be on more than the white or both on at the same time for a long period of time.... also what type of bulbs have people found to work best to grow coraline?? Thanks you for your time.

 

[Gumby]

If your Ca levels are sitting around 300-400, that should be fine. Use a good salt when you do waterchanges. Most people I know perfer Oceanic salt.

As far as lighting goes, the brighter the better. If you have a deep tank, you'd probably want one actinic(blue) bulb because blue light penetrates deeper water better.