I am new in this hobby and just set up my salt water tank(fish only) for about 3 months. My tank set up is as follows:
- 70 gallon tank
- 75 lbs LR
- 80 lbs Live sand
- wet and dry filter
- 210 Watt lighting (50/50)
- 2 damsels
- 2 angels ( a flame and a 3-spot)
- 1 Blue tang
- 3 wrasses ( 2 small and 1 large)
- 1 small yellow tang
- 2 clown fishes
- 1 blenny
Every time I test the water with Salt Water Master liquid test kit
, the result is:
Ammonia = 0
Nitrite = .25
Nitrate = between 20 and 40 since the color are so close I cant
I did make partial water change 3, 4 times ( 15-20 gallons each time) then test the water again next day, the result still the same.
I thought that by making partial water change, the Nitrite and Nitrate levels should be improved but did not.
My question is: I don't know how the Wet and Dry filter works, I read one of the forum and it says the bio balls are Nitrate factory so should I rinse out the bio balls ??? Also, I heard that the water in the sump underneath the bio balls should not be taken out since the benificial bacteria live there,
is it true ???