Here are the links to Josh's site for the supplement rotation I use:
With every feeding:
http://www.joshsfrogs.com/dendrocare-vi ... -50-g.html
http://www.joshsfrogs.com/repashy-calci ... z-jar.html
Every two weeks:
http://www.joshsfrogs.com/repashy-vitam ... z-jar.html
I seem to get better quality clutches with dendrocare in my rotation. It's non scientific but I like that supplement as well. You have to experiment with the frequency of vit A IMO. I found once a month to be inadequate for my Lorenzo (estimated by clutch fertility) so I moved to twice a month.
Buy fresh supplements every six months. Keep refrigerated. Good luck!
EDIT: I should clarify I alternate dendrocare and repashy ca plus weekly - I don't mix the two together. So I'll do one week of feedings with dendrocare, the. One week with ca plus, then back to dendrocare, etc. working in one feeding of vit A every other week.