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Here is my problem, I take sea water from the sea to fill my tank; that water is pollution free Im sure, cos we get very clean water here in my country. Can someone tell me how often should I change water of my tank? I keep a reef and beleive me its growing wild. But I have no knowledge about...

Here is my problem, when I check my ph level of my tank, it normally reads 6.5 or 7. Im bit too concern about it, 'cos I know nothing about ph and everyone says that it should be about 8. Ok, can someone tell me, what this Ph is, and why it goes up and down; and how can I lower the ph level and...

Can someone tell me what am i to do to fight with this green algae that grow on my tank. it grows on the live sand and it too makes a mess on the glass too. its color is real dark green. by the way i keep sea water in my aquarium, and i havent come across this problem before. i wonder why!!! i...

hi, my aquarium is a sea water aquarium, i change half of its water in every 3-4months, but i notice the color of the water becomes yellowish. can anyone tell me whats happening??

can anyone tell me what is Reverse Osmosis and what does it do. how does it filters and so on...

Hi, Im from a country where we have access to sea very easily. Im interested in keeping a marine aquarium but I still dont know how to keep the ph and celcium level and etc. At the moment I have an aquarium and I am keepin pretty good stuff. But I am afraid that I may have to encounter those...