As already mentioned, all models of Eric filters (both pump-fed and gravity-fed) take on a new shape this year, in order to improve the mechanical stage and drastically increase the periods required between cleaning.

There are now 12 models of my filters available right now, so to name them from the smallest to the largest these are –

The Pump-Fed Compact Filter.

The Gravity-fed Compact Filter.

The Pump-Fed E1 Filter.

The Gravity-Fed E1 Filter.

The Pump-Fed E2 Filter.

The Gravity-Fed E2 Filter.

(All the above models are supplied with lids.)

The Pump-Fed E2.5 Filter.

The Gravity-Fed E2.5 Filter.

The Pump-Fed E3 Filter.

The Gravity-Fed E3 Filter.

The Pump-Fed E4 Filter.

The Gravity-Fed E4 Filter.

(Lids for these models are extra.)

Regarding the recommended bore of the inlet and outlet tubes, I suggest –

A 1” inlet and a 1.5” return outlet for the Pump-Fed Compact Filter – waste line to be 1”.

A 2” inlet and a 1.5” pump outlet for the Gravity-Fed Compact Filter – waste line to be 1.25” .

A 1.25” inlet and a 2” return outlet for the Pump-Fed E1 Filter – waste line to be 1.5”.

A 2” inlet and a 2” pump outlet on the Gravity-Fed E1 Filter – waste line to be 1.5”.

A 1.5” inlet and a 2” return outlet on the E2 Pump-Fed Filter – waste line to be 1.5”.

A 2” inlet and a 2” pump outlet on the E2 Gravity-Fed filter – waste line to be 1.5”.

A 2” inlet and a 3” return outlet on the E2.5 Pump-Fed Filter – waste line to be 2”.

A 3” inlet and a 2” pump outlet on the E2.5 Gravity-Fed filter waste line to be 2”.

A 2” inlet and a 4” return outlet on the E3 Pump-Fed Filter – waste line to be 2”.

A 4” inlet and a 2” pump outlet on the E3 Gravity-Fed Filter – waste line to be 2”.

A 2” inlet and a 4” return outlet on the E4 Pump-Fed Filter – waste line to be 2”.

A 4” inlet and a 2” pump outlet on the E4 Gravity-Fed Filter – waste line to be 2”.

HOWEVER – because all these units are hand-made to order, variations can be made to all these recommendations as per the customer’s instructions.

Here is an illustration of the smallest model – namely the Compact Filter together with the largest model – namely the E4 Filter – shown to give some idea of scale.

The left hand illustrations are the pump-fed units and the right hand illustrations show the gravity-fed models.

The biological stages and the eMat cartridge blocks inside them will remain unchanged.

Of late, I’m getting requests to supply my filters in clear PVCu – like my test models. This can be done but some details need to be pointed out in advance –

The clear filters weigh much more than the polypropylene units.

They cost around 20% more than the polypropylene units.

The walls and bases of the clear units attract dust plus algae and this requires periodic cleaning, the polypropylene units always remain free of dust and algae.

However, the clear units have many advantages that allow the user to witness exactly what is taking place inside them, they also show visible alerts when it’s time to do a discharge and be able to see exactly what takes place when a discharge is made.

As a footnote, I’m putting one of the new units on test at the moment with high stocking rates, high feeding rates and believe that the filter can easily remain untouched for well over three weeks.

Waddy.