水草情迷

i want to diy a LED light for my tank , 36*16*30" H , for 紅龍 , and i got a 32" atman T8*2 light , and i forgot how big power already .....

i would like to ask how many pcs LED i need ? how big power ? ( i want to use 2 switch , 1 for white and blue colour led , 1 for purple/red led )

and how big power supply i need ?

where can i get these kind of parts ? how much will it be ?

plz help thx a lot