Great tank! I just peeped it. Are you running two 39w as of right now? And for how long? I think that might be the cause of your current algae situation. I think im going to just use one bulb throughout. Maybe start with 2 bulbs during emersed even.
im running 2 of the 39w for 7 hours and as of right now no algae issues just some that appear on the glass about mid week but by then a few days later ill do my weekly water change and cleaning. so it works out fine.