Dear all,
after I had two fish (a blue damsel and a yellow wrasse) removed from my
second tank last month, the diatoms and algae have disapeared from this
tank. Thus, I have the confidence to make a conclusion that 'fish have the
effect of the algae/diatom blooming'.
I dont know what exactly caused this, but I guess by having a no-fish tank,
predation to certain planktonic life is greatly reduced which I assumed that
this planktonic critter consumed the diatoms/algae.
FYI, the first setup been doing very well for more than 5 months (also a
no-fish at all). But the second one (which is identical except that it was
habited by these 2 fish) had algae/diatoms problem. Then last month, I
removed the fish, changed 100% water with natural sea water. At first the
diatoms/algae still appeared (actually the amount of the hair alga is
nothing compared to the diatom, maybe only 5-10% of the total of this
comobination). I didnt siphoned out the diatom or changed the water. I just
removed the diatom that covering some of my corals by waving my hand to
produce current. But now ALL the diatoms/algae have gone! :)
I know: having a no fish tank is maybe like having a soup without any salt,
that make me think of adding 'more-reef-friendly' fish that arent 'filter
feeder'. I am planning to add surgeons (maybe the blue palette surgeon,
Paracanthurus hepatus, or the yellow surgeon Zebrasoma scopas). What do you
think?
But of course this time I will have to feed the fish (usually I didnt feed
any).
Btw, this is the picture of my tank:
www.geocities.com/liquidworld2000/mytank.htm
I still dont have time to fix some error on it (same thumb pix), but the
actually size of the pix are ok.
Also I need help to ID some critter.
Thanks,
Jim.
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