Ok so i currently have a 29gal tank
The tank is equipped with an under gravel filter
I dont use the little charcoal inserts advertised at the pet stores as my research seemed proved it un neccisary
So my filtration is basically the two heads (chimney figures) at each end of the tank with airstones
So would a traditional overhead filter work better/provide better filtration
I have had this tank for over 5yrs but now that i want more fish the concern of overcrowding/waste pollution has risen once again
I know that these overhead filters are equipped with cartridges for filtration
So does that make them more effective in keeping the tanks waste pollution under control?
Ams does this provide more oxygen/water flow?
Here is the second part of my question
My current setup
1 male Julidochromis
2 balloon mollies
Large common algae eater
Two crayfish ( 3.5inch electric blue and another 1.5 inch mexican dwarf)
So my brother recently brought up the topic of waste pollution in my tank
Between the two mollies and algae eater there is already a large amount of waste
Lately i have been doing a 50% water change every 2-3 weeks but i hope to change that to a more frequent 25% per week
So can i add more fish?
I was looking at getting a second julidochromis and/or a yoyo loach
Can i get these two fish or any at all?
I have adequate housing for both knowing that they both enjoy rocks and crevices
any answers/suggestions are welcome