Thanks for the replies ! :D
Well, I add the salt because I thought the salt will kill the algae and some bacteria...don't know if it is wrong or right to put the salt into the aquarium. :P My aquarium is not 100% direct to the sunlight but got a bit sunlight in the evening.
I got a big enough water tank to collect the rain water (it got filter too) and it is near the aquarium so I can change the water easily and no need to worry about the tap water.
Add UV sterilizer? Oh, its sounds new to me and I don't know if my dad will buy it for me( I'm still a teenager :P ) .
And again, are the aquatic plants will reduce the production of 'green water' ? My dad have gave me some aquatic plants that got from the streams AND I DON'T KNOW HOW THE HELL TO PLANT IT INTO THE AQUARIUM SO I JUST INSERT IT INTO THE GRAVEL , hope the aquatic plants will grow bigger and have more roots later ? any advices about the plants?
HERE THE PICS :
(What type/name of the aquatic plants? )
(I JUST INSERT IT INTO THE GRAVEL, NO IDEA HOW TO PLANT IT , is it the right way ?)
(I also done the water change.)
*PS : will the swamp cabbage I added on the water increase the production of 'green water' ?