1. Cotton (Top)
2. Charcoal
3. Bio Balls
4. Substrate
5. Polyfilter (Bottom)
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in that particular order?
For my internal overflow to the sump,
i only place this.. (top to bottom)
1. Filter wool
2. Bio-balls
For my sump,
water flows through this order
1. Bio-balls
2. filter wool
3. charcoal.
[:] hope this helps
but i wun use substrate in my filtration area like internal overflow and sump but rather using the coral sand inside the main tank.
Let us work together to preserve the world for our children to inherit by being responsible to our surroundings. Take nothing but pictures, leave nothing but footprints, bubbles and memories.
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