hard to say, what is the depth of your tank & what kind of coral you plan to keep?
18000k, i prefer not too high K rather than have more tube with various spectrum, i use 4 x 24w
now technology has improved a lot, not necessary to go until MH for normal reef setup.

as for cooling, long term better get a chiller, as you add more lighting your water will boil.
look for 2nd hand, many people upgrade their tank & will sell their chiller.

stable water parameter very important for reef tank, if can make a sump tank than will be good,
you can shift you skimmer to the sump tank, also you can have space to put proper carbon filter, po removal,
even a refugium.

depth of my tank is 1 ft..
thank

for shallow tank, your lighting should be enough already,$
should consider more on keeping your water parameter stable
temp should be 26-27c all the time, nutrients level should be low
guessing phosphates should be quite high, with the over intense light, red slime can grow quite fast.
dump a sea urchin into it, in a few days, everything will be shining shining.

thanks....ur very helpfull

www.chuisui.com : Malaysia Marine Club

yup, but prefer reef central
http://www.reefcentral.com/

before plan to get new live stock, can come to this website to study first
not everything we are capable of keeping.
http://animal-world.com/encyclo/marine/angels/angels.php

where i can find cheap nano chiller??my tank only 2ft..

can look for 2nd hand from forum & lfs shop, bought my resun cl450 for 500bucks
however i still use fan while around, chiller dun kick off, not so noisy,
top up water occasionally also beneficial to the system.
while away is purely on chiller. temp set to 26c, stay 27c all the time.

got budget than can get a new hailea 130A, cost around 850, silent, price good & got 1 yr warranty.
previously i checked, only have white, i prefer dark to match my hse & this 2nd hand unit bump in the right time.
*might upgrade tank in future so get bigger chiller is ok. 

do u heard ice prob chiller??where to find it??i try to find 2nd hand chiller but not found..
could help me??

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Added on September 27, 2009, 8:24 pmanyone want to sell small chiller??

i have 3 power head filter include one of my skimmer and my tank is 2ft longx1ft heightx1ft wide..it about 12 to 15 gallon..

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Added on September 28, 2009, 8:00 pmmy tank temp 30c

thanks a lot..if u have o heard anyone to sell chiller,please inform me..

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Added on October 3, 2009, 1:22 amwhere i can find peltier in malaysia??i want 12v 6A peltier..it is enough to make chiller for 2 ft tank??

hey what do damselfish n clownfish eat besides pallets?

im cycling my tank now with a 3 stripe damselfish and i'm afraid that the pellet remnants will contaminate the tank or should i just leave the uneaten food that sunk to the bottom?

now i have one 3 stripe damsel.

my tank is pretty small, 1.5ft height n 2ft length, 1600l clip on filter, and a protein skimmer.

later in a month planning to get a pair of percula and an anemone.

if i add a blenny fish is it too much for my tank? or could u recommend me any other bottom dweller.

and thanks a lot,your info is very helpful for a newbie like me.

my tank