Hello,
I give up the plant and would like to have green algae on the wall and floor. So far I only have brown algae. How do I cultivate the green algae? Thanks.
Fred

If you increase the intensity and duration of your lighting you should get a nice algae crop growing. You may also have to add a phosphate or nitrogen as a fertilizer to really get it to grow. But that part would depend on what your levels are now. Too much phosphate and the algae can get out of control.

How much light do I need for 29 g and 55 g? and How long? Which fertilizer do you recommend? Sorry for too many questions. Thanks.

I have had really good luck with Seachem's Flourish Excel and a DIY co2 canister.

As far as the light goes, go with a high wattage power compact. Check ebay on that.

Good luck,
Ed

Thanks Ed...

I have had great success in cultivating green algae in my tanks by using the light bulbs from ZooMed called Tropic Sun and Flora Sun. Tropic Sun especially has worked very well for me I am now using only Flora Sun because I have plants in the tank.

Are you usig dual bulb or single? Thanks.

14 hours a day photoperiod should do fine for green hair algae. It doesn't need any extra nutrients as it primarily feeds off nitrates and phosphates, both in plentiful supply from your fish.

A single bulb will do fine fine on your smaller tank. Most of the light passes through the glass sides on smaller tanks (where you want if to go to grow algae walls), whereas more light gets absorbed into the water in larger tanks, so a double light for the larger one would help.

Place the light as far back as possible to promote the algae more on the back rather than the front glass. Backlit fish look quite good anyway.

Scrape off any unsightly green slime algae spots which appear as they compete with the nice soft hair algae you want. You'll have a green carpet of the stuff in no time!

PS. Don't let it grow on the floor (if you have a bare bottom tank), and keep the vertical glass clear in any area where your fish sleep or rest where their fins make long-term contact with the glass, as it harbours microrganisms which may cause a rash from constant contact.

I will tell you this man knows what hes talking about

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