Help with Algae

[cjloong]

Hi... Need to fight algae, as I have quite a new tank. Started in May. Here is the images of I belive 2 types of algae in my tank.

Pictures
Type 1


Type 2






Type 2 looks like thread algae. Type 1 BBA?

Water Parameters
KH - 5
PH 7.0
NO3 - 5 mg/l
PO4 < 1 mg/l
FE - 0.05 mg/l

Light = 36W PL X 2 + 15W FL X 2 about 10 hours a day.
Tank = 20 gallon

It is very high light, I know.

Plan
(1) Increase CO2
(2) Reduce 15W X 2

Past Week Incidents
I have been changing water quite frequently and fertilizing thereafter. Also, there was a accident where water hose shoots straight at gravel, causing base substrate to come out. 30W of light was out for sometime too but algae occured during these time. Suspect it is CO2 which was very low during the lower light period.

Thanks for any input/help. Help in identification will be helpful as well as I don't know much about algae, need to learn more about it.

Thanks.

[geoffrey]

You will have to manually remove as much of those algae as possible. Correct your CO2 level using the pH/KH relationship for 20~30ppm. Dose sufficient fertilisers. This ought to slow down the rate of growth of those algae.

[PeterGwee]

Seems like staghorn to me....Ammonia is the issue here more than anything. You should have done a large water change whenever you stir up the substrate for some reason. Now, trim off all the algae as per adviced by geoffrey and pack the tank with plants after that. Add back the nutrients and target the CO2 at 30ppm for the entire photoperiod.

Regards
Peter Gwee

[FLIM]

Try to get some black mollies and rosy barbs. They will help to clean the algae to some extend.

[cjloong]

Thanks for the comments. I have just installed a cylinder CO2 in there (transferred from my other tank). Plants start bubling like crazy last night.

Will see how it is this weekend.

[juggler]

Beautiful algae photos!
Can reduce the lights as you planned. I see algae on the glass.

Cheers!