Prism Purple

Prism Purple
(Please help) trying to grow coraline algae!?

i have a 29 gallon tank and i have 1 20W coralife 50/50 bulb, 1 marine glow, one power glow and one regular wallmart bulb i also have a 150W halogen with a flood light bulb
i have a few peaces of rock with nice coraline on them and it has spread a tiny bit but it just wont grow well
i am using purple up and some other supplements
i have a red sea prism skimmer and a regular hang on filter
i just want it to thrive and look nice

test your water parameters,

coraline likes the same cal alk and mag as stony corals,

cal 400-450
alk 7-12….8-9 being preferred
mag 1280 and up,

if your doing regular water changes then you shouldn’t need to dose iodine