Thx I'll give it a go.....
faizal said:Hi geaves,.. just in case if you hadn't come across this thread, here are 2 links you might be interested in. Clive (ceg4048) provides an excellent presentation about surface scums here. Hope it's of use to you.
viewtopic.php?f=21&t=13603&hilit=surface+scum&start=20
viewtopic.php?f=21&t=2389&start=10
If you don't mind me asking, i know that it's a 40 cm cube but what is the volume of the tank in litres or US gallons please?
And are you still performing 50% water change along with the daily 2ml easycarbo dosing?
P/s : Sorry for the multiple edits.
faizal said:I think you are under dosing the liquid carbon. For a 64 litre tank I think you need to dose 8ml after every major (> 40 % water change) and 1.6 ml on non water change days. My excel only supplemented 64 Liter tank gets 3ml daily on non water change days and 13 ml after > 40% water change.
Reducing the length of light is definetely the right way to go but I also think that in order to see better growth you should try increasing the liquid carbon dosing.