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2x39w or 4x39w

Nelson

Member
Joined
17 Nov 2008
Messages
2,548
Location
Norfolk
hi,
i have the option of 2x39w or 4x39w over 215 litres.only one power lead so no midday burst.i know there's other factors involved(co2,ferts etc)but what would you recommend i use.
thanks
neil
ps.tanks 18" deep and lights are 4" above
 

LondonDragon

Administrator
Staff member
Joined
21 Feb 2008
Messages
11,251
Location
London
Lots of light mean lots of everything else and also means there isn't a lot of margin for error.
But it depends what you trying to achieve and how much effort you want to put into the tank when it comes to maintenance/prunning/etc...
I run 144w over my 125 liter tank and it is quite challenging to get the balance right, but since I am running my tank as more a test at the moment than anything else I don't mind the odd burst of algae and learn how to deal with them ;)
But to keep things simple 2 tubes would be perhaps a safer bet ;)
 
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