coral nutrition

[jacksonpt]

I know that most corals are primarily, if not entirely photosynthetic. But I'm wondering how important it is to provide additional nutrition for those corals that also filter feed. I've got a 12g tank with the following corals:

- mushrooms (red, watermelon, and hairy)
- ricordia
- blastos
- zoos
- leather
- gsp
- frogspawn

- xenia
- toadstool
- candycane
- capnella/kenya tree

- orange monti cap
- green monti
- 2 types of acros (millipora and digitata)

So, that first group I'm pretty sure are primarily if not entirely photosynthetic. The second group I think is mix, the last group I'm not sure about (still learning my SPSs).

So, my question is how important is it to dose for filter feeders? I do a 3g water change every 10 days or so, everything seems to be doing well, but there isn't the growth I was expecting. If it's advisable to dose, what do you recommend? I was at the LFS the other day and saw DTs (whcih I know is popular), and several offerings from Kent.

TIA.

[Henry Colf]

I use cylopeze for the lps and phytoplankton and oyster eggs for the sps and my palys eat what I feed my fish.

[Gary Majchrzak]

Here's a link to part 1 of Eric Hugo/Borneman's 7 part article on feeding corals:

http://www.reefkeeping.com/issues/2002-07/eb/index.php