* The calcic natural coral stone contains lots of calcium
carbonate which prevent sea water becoming acidic. And maintain
weak alkalinity which is good for saltwater fishes.
Item name
Size (mm)
Quantity
Coral Stone
C-15
20～30
25kg
Coral Stone
C-10
10～20
25kg
Coral Stone C-5
4～5
25kg
Coral Stone C-4
3～5
25kg
Coral Stone C-3
2～3
25kg
●Special
Sand
* The natural sea stones are sifted out into similar size and then
mixed with smashed shells. It quicken outbreak of bacteria
and helps to increase filtration capability.
Item name
Quantity
Special Sand
40kg
●Quartz
Sand
* They are widely used due to its cheap price.
* It is best to be used for pressuring type filtration.
Item name
Size (mm)
Quantity
Quartz Sand
2～3
25kg
●Coconut
Coal
Coconut coal quickly adsorb organic matters
which would be a cause of turbid water, bad smell and worsening
water quality.
Item name
Size (mm)
Quantity
Coconut Coal
4～5
15kg
●Zeolite
* Zeolite works like resin to exchange ion.
* Zeolite also adsorb ammonia ion as coconut coal do.
* These ability has affect to prevent red tides and/or excessive
feeding of nutrition.
