Hello,
This is always such a loaded question.
The Powersun MVB is a nice bulb, but not super strong but should be fine.
Since the Herptivite has calcium in it, you can give that one just one time per week. If he
gets adequate greens, etc then he will get plenty of vitamins.
Since you are using a MVB we usually don't recommend using D3 daily. So you can use the
regular calcium without D3 3 times per week, & the calcium with D3 1 time per week. Then
the herptivite has calcium in it so he will get calcium on the day you use that. The total days
he will receive calcium would be 5 & vitamins 1 day.
Then on 2 days per week, you can rest on the supplements. I think he will be just fine on this
schedule.
I hope that helps out.
Tracie