actually my specs are in my sig
Plants need phosphates to grow, phosphate removers are a bad idea for planted tanks.I only got brown algae after adding PH Down. Turns out the stuff has phosphates in it and brown algae loves that. Unless your sure phosphates aren't the problem I would try a phosphate remover product.
my photo period is like 9 am to 10 pm so 13 hourskeep wiping it off till your tank gets established better? reduce your photoperiod?
is it just like a coating on everything? or is it more of a blob or tuft of brown algae?
could it possibly be rhizoclonium? sometimes rhizo can be brown
anywho this site usually helps with algae battles
http://www.theplantedtank.co.uk/algae.htm not mine but is an easy go to for referencing