I've been fighting a losing battle with Cladophora for a couple of months now. I'll start off with some background on my tank:
It's a 10 Gallon Planted Non CO2, Non Excel tank that I setup 8 months back after growing a foreground of Hairgrass using emersed methods. Here is the pic of the tank in all it's glory (7 months back)
At the time I was using Excel and performing 50% WCs every week. Later on I decided to convert to a Non Excel tank so I lowered my fert doses and stopped with the water changes. I had already had some traces of cladophora on my manzanita wood (you can see the little green spots on the driftwood in the pic above), but over time it began to over run my tank and the hairgrass. Here are some details on my tank:
10 Gallon tank
Flourite Black Sand substrate
2x10 Watt CFL (5500 K) lighting
Ferts (As per Tom's suggested dosage on the Non CO2 thread): Once a week,
1/8 Teaspoon of Seachem Equilibrium (for traces)
1/16 Teaspoon of KNO3 (Potassium Nitrate)
1/64 Teaspoon of KH2PO4 (Potassium Mono Phosphate)
I also use a little Flourish for traces sometimes.
Unfortunately the Cladophora really took a hold of my tank and almost wiped out all the hairgrass in the foreground. It was also getting all over the rotala's and covering my driftwood in huge chunks. I have been at a loss on how to deal with it effectively.
From what I have read on the net and here, it seems like it is hard to get rid off as it prefers the same conditions that plants do. Last week I decided to try combatting it with 2.5x the normal dose of Excel every day (have now converted to an Excel tank, and have correspondingly upped my fert doses). While the Excel seems to have helped slow the spread of cladophora, it is still very much in the tank and alive. I managed to kill some of it (on the driftwood) by spraying it with excel (using a syringe).
I was just hoping to get some advice from all the experienced folk here regarding how I should go about battling cladophora. I have been trying to get rid of as much as I can every week (using a toothbrush) but it does grow back.
Thanks a lot!