wet/dry

[fish meat]

how big of a wet/dry do i need for a 110 gallon. should i have a second filter beside the wet/dry. or is it ok by itself. i will be housing 1 jar, spotted gar and maybe 3 more fish

 

[Dr Joe]

Rule of thumb is... 1/3 the size of the main tank for heavier bio-loads, 1/4 for normal loads.

A second (redundant) filter is advisable, cannister or HOB.

Dr Joe

.

 

[Potts050]

Rule of thumb is... 1/3 the size of the main tank for heavier bio-loads, 1/4 for normal loads.

A second (redundant) filter is advisable, cannister or HOB.

Dr Joe

.

How many 'turns' per hour should a wet/dry filter provide? Isn't that more impolrtant than the actual volume of the sump?
Or, is the volume consideration more to do with preventing floods during mechanical failure?

 

[Dr Joe]

How many 'turns' per hour should a wet/dry filter provide? Isn't that more impolrtant than the actual volume of the sump?
Or, is the volume consideration more to do with preventing floods during mechanical failure?

A W/D can handle most any turnover rate.

Turnover rate is partially dependent on bio-load and size of W/D filter. The W/d has to be able to handle all the water that would drain back out of ant tubes or pipes during a failure. Anti-syphon holes are used on the pipes to prevent the tank from draining completely into the W/D.

Dwell time is actually one of more important consideration in a biological filter design.

Dr Joe

.

 

[Potts050]

I think dwell or residence time is less important than the surface area of the contact media in a biolfilter.

The product of flow rate and contact surface area is a more rational indicator of filter capacity than residence time in my humble opinion.

 

[fish meat]

do you have a blue print of a w/d

 

[sma]

go to the DIY section and look at the stickies by JDMAN and JustLooking

 

[aussiei]

A1/4 size is plenty but might I suggest a fluidized bed filter on the out side of your wet dry on the way back to the tank I made one from a diy that I found online and I have tried to overload the tank with no luck I have a 110 hooked up to a bed and the bio-load is approximately the same as a 900 gal this filter os the best thing that I have ever used for fresh or salt and my parameters are always perfect. Oh and it only cost about 30$ to make

 

[TEL]

The wet/dry should be ok. To find out how big a sump you need work out how far down from the top your bulk head fitting or overflow box will sit then drain the tank into some buckets untill you are just below the outlet this will show you how huch your sump will need to hold when the power is off, this is the minimum size you should have and I run mine at about 3 to 4 times an hour witch gives the bio-media time to do there job hope this helps. http://www.aquaone.co.uk/marine_sump_filters.php it comes in a single tower as well