coral rely on lighting?

[hwcheong]

Hi, does coral rely on good lighting to grow.

My tank new to windows and morning time light from windows shine on my tank and my hammer open well. but reach 6 or 7 pm even with 2 lights on, the hammer start close... so please advise if you know. Anything wrong with my tank setup?

[shiraz]

ya like dUh... they do rely on light to 'grow' hmmm what lights are u using? u must not rely on the supply of sunlight instead u have to get more powerful lights...

[sinner]

depending on what corals you intend to have and then you can roughly gauge the kind of lighting you'll need... for example mushrooms requires low-medium light, lps medium-strong, sps strong....

i'll recommend you to get a T5 at least this will save you some $$$ rather then getting PLs and upgrading them in the near future... but of coz it'll be best to get a MH if you have a chiller

my 2cents

[sinner]

ooh yes one more thing to add... spectrums are very very important too! you can have 1000w of MH and it's still useless...