Hi all I have a problem with algae in my tank, I'm a new guy here so may need some help with uploading pics for identification. I have taken the pics and have them in my pics on my comp, but do not know how to insert them onto the topic sheet! Anyway the algae seems to be a brownish, hard calciumish sort of thing on the leaves of plants and the back of the tank. The tank is 5ft x 18" x 18" actual water volume, I have a fluval 304 and a 104 running at about half flow. I clean the media of both filters once a month in the aquarium water and place the recommended amount of fluval clearmax in one filter and rowaphos in the other filter once a month with the filter clean down. I change 30% of the water twice a week using 100% HMA triple canister filtered water as this is good for my discus. The discus breed regularly by the way. nitrite is 0 mg/l, Nitrate is 10 mg/l, ph is 7.0, GH is about 15 d and kh is about 4 d. I dont use CO2, But I did start dosing with Flourish Excel a few months back but had an outbreak of brown diatoms so stopped using it. If somebody can let me know how to upload the pics I have some good ones taken with my digital SLR and macro lens. Kind regards Kev. I have 100% Seachem Eco complete substrate about 3.5"front - 4"rear Just worked out the pics i hope Forgot to mention I have 4 x 55w T5's running 10 hours a day It would be really helpfull if anyone reading this could let me know if they can see my images as I'm not sure if they can or not.