Hi Gem,
Thanks for the great link to your aquarium! That helps a lot!
It is quite all right that you added fish to your aquarium.
Despite what some may say, you cannot just simply add water to an aquarium and wait a few days... It doesn't work that way.
You need a source of ammonia to begin the cycling process and decaying fish waste will offer that.
Did you happen to read the article for a better understanding of the
aquarium cycle?
Your tank has only been set up for 5 days, so I believe you to be here in the cycling process:
fish waste = ammonia
Ammonia clouds the water, and I believe that's what's happening inside your tank right now.
Bacterial blooms cloud the water too, but your tank is only 5 days old and that is not enough time for a full blown bacterial bloom.
You have an under gravel filter. This means that the bacterial colonies that will develop to break down the toxic ammonia and nitr
ite will live in the gravel.
In order to not disturb the colonies, you will need to either leave the gravel alone completely (recommended) or gently turn over surface gravel to release debris before preforming water changes.
Usually I recommend to new fish keepers that they use only 1 fish during the cycling process, but it's OK if you already have more than that.
You do want to make sure that it's not overcrowded though.
What kind and how many fish do you have in your tank?
And is it 4 gallons (15 liters)?
Right now, your aquarium needs to establish the nitrogen cycle.
This will take a few weeks.
I recommend that you purchase a 5 in 1 dip stick water test. They are becoming very popular among fish keepers because it's simple to use and affordable.
You can buy at Walmart, petsmart, and other pet shops.
With the test readings you can determine exactly where you are in the cycling process and whether you need to preform water changes to dilute toxins - I can help with understanding this.
After your cycle is complete and the gravel has established all the necessary beneficial bacteria to convert toxins into a non toxic form, you will only need to preform 1 monthly 20% water change to maintain the aquarium.
Establishing the Nitrogen cycle is the hardest part of fish keeping... Your aquarium will be crystal clear after this process... Then, care must be taken not to disturb the bacterial colonies that keep the water clean (not disturbing the gravel) or you will have bacterial blooms which will then cloud the water...
Right now, I'd recommend doing a 10% water change daily until you get some means of testing your water.
Feed fish lightly (no more than they can consume in 1 minute).
Crush one flake at a time, wait until it's gone before adding more.
After 1 minute is up, they are done for the day (during this cycling process).
Please let me know how things are going, I'm here to help :D
Kae