Hi there,

I am new here. I don't have an aquarium for my gold fish but I keep them in a clay pot measuring 3ft in diameter and 1ft high. I am using a submerge power head which pump water to an up down filter (using a planter box) segmented it into 5 chambers. 1st chamber is brushes, 2nd chamber is broken flower pot with green filter mat, 3rd chamber is coral chips with white filter mat, 4th chamber is coral chips, 5th chamber is bio balls then water flow back to the pot.
The gold fish (10 of them) has grown well (about 5 inches measured from head to tail), water is crystal clear but yam tree placed in the middle of the pot doesn't grow well. Purpose of the yam tree is to absorb the nitrate (I read some where it helps but not sure).

Regards,
Loke