Coraline on glass..but not on rock

[argileh]

I have a descent coraline algae growth on the glass, but almost none on the rocks, and during the past several weeks there is macro algae (brown, bush like) growing out of the rocks. Could this be an indication that the nutrient level is high.

it's a 29g boceanic bio-cube with top removed (suspended MH), skimerless, but with 15% weekly water change. fishes are one small perc clown, one small pygmy angel and yellow watchman goby.
forgspawn, tocrh and xenia colonies are doing fine. Green candy cane has not expanded in a while

Water parameters are:

- Nitrates: approx. 12 ppm
- Salinitiy: 1.026
- PH: 8.3
- Calc.: 420 ppm
- Alk : 9 dkh (salifert kit, not sure if the kit could be one of the defective ones)

Lights are 175MH 10000k that are about 13 months old. Not sure if this is a factor, but any way I am expecting an Iwasaki 175w 15000k in few days.

Any opinions on the lack of coraline on the orcks, as well as the unsightly macro algae growth

[bv_reefer]

-thats odd I always thought that coralline growth on glass panels was the last place of growth, mnie is already cured and covered with purple corralline
and don't expect 2 see any coralline growth on the glass for a few months @ least...

[Mik_101]

Hmm that sucks. About the brown algae that is most likely because you are skimmerless.

[Der_Iron_Chef]

Do you have any other invertebrates in your system? I also run a skimmerless system, but I don't have any unsightly brown algae.

Can you get a photo?

[bv_reefer]

-well i'm gettin' a skimmer tommorow but the diatoms are from the cycling period (week2) so i'm really not surprised, and btw mik_101 u knew i'm gettin'
a skimmer what was that for? zatvori usta molimte za svoju srecu i nepravime budalom ispred narodom!

[Der_Iron_Chef]

Ugoditi govoriti Engleski jezik!

[bv_reefer]

-pa bogami kad znam srpski nek se prica

[Mik_101]

Originally Posted by bv_reefer

-pa bogami kad znam srpski nek se prica

neka sto da ne pa serbi smo.BRAP!

[christyf5]

Guys not this again. This will be the last time I'm warning you.

[Der_Iron_Chef]

Just for the record...I used a Croation-English translator and asked them to speak English. I'm not, myself, in the business of posting in other languages for the heck of it.