Septic Tanks - CRYSTAL

Crystal Septic Tanks are the superior traditional two chamber design, but made in fibreglass.

Benefits

Odourless - unique design means that the smell is vented back through the soil vent pipe.
Shallow installation - cheaper to install - concrete or Gravel Backfill.
Cleaner Effluent - more efficient than 'onion' shaped septic tanks.
Simple Test for Emptying Requirement - No need to empty it unless required.
Septic Tank Filter - can be fitted to keep the soakaway clean.
30 Year Tank Warranty - The market leading septic tank warranty is only 12 months.

Crystal Septic Tanks are manufactured for us with two chambers offering primary Crystal Tanks - The Septic Tank with a traditional two chamber design settlement of wastewater and sewage allowing further settlement before discharge of the effluent. They can also be fitted with a septic tank filter to prevent small solids from exiting the tank and blocking the soakaway. Small suspended solids are caught in the filter and slough off back into the tank before they can damage the soakaway.

These filters are fitted as standard on septic tanks all over the world - except for the UK where 'onion' shaped septic tanks make them difficult to fit. The filters slot into the vertical part of the 'T' pipe on the septic tank outlet.

These septic tanks are our own design and not available anywhere else.

Unique Aeration of the Crystal Septic Tank

Crystal septic tanks are unique in that they retain the aeration process that was intrinsic to the superior traditional septic tank design.

They have a ground level vent pipe on the second chamber. This allows an airflow through the tank and up through the soil vent pipe keeping the septic tank contents sweet and allowing an aerobic 'crust' to form on the top of the effluent. This forms a barrier between the effluent and the air and smothers the smell of the effluent itself. There is an airflow passage through the baffle between the 2 chambers. This allows smells to travel from the last chamber, through the first chamber and back up the pipework to the soil vent pipe on the house wall. Most septic tanks have a solid baffle and the smell is forced out through the lid of the last chamber as it has nowhere else to go.

Benefits of Crystal Septic Tanks

No metal struts to corrode inside the septic tank
30 year tank warranty
Smells are vented back to the soil vent pipe and NOT through the septic tank lids
Two access points for emptying, one over each chamber, to ensure that all areas of the tank can be seen for sludge removal
Easy access for clearing blockages on the 90 degree bends on the 'T' pipes inside the septic tank.
Less septic effluent and polluting
The septic tank has a shallower in-ground depth
Septic tank filters can be installed to further reduce the suspended solids in the final effluent by up to 69%
Available with a range of inlet and outlet options
Complete with moulded-in 1 metre neck extensions (to be cut to the depth required) and lids

Septic Tank Sizes

2800 Litres - 4 persons
3600 Litres - 8 persons
4500 Litres - 13 persons
6000 Litres - 22 persons

Unless you have very free-draining sandy or gravely soil it is unwise to consider using a septic tank for populations over 13 persons as the size and cost of the soakaway will be prohibitive and much more than the cost of a superior sewage treatment plant. The same applies to smaller tanks if the soil contains clay.

Specifications of Crystal Septic Tanks

Crystal septic tanks are available in two types: