filter

[black angel]

I am looking to get more filtration for my tank and i dont know what to put in it.

The tank is 39 inches long and holds 34 U.K gallons or 154 litres. Currently i am using a fluval3+ which has a turnover rate of 700 l per hour.
My tank is overstocked so i'm thinking of getting something either with a higher turnover rate or a filter with more room in it for bacteria growth.
I looked at getting an eheim external and the one i liked was the 2227 with a turnover of over 1000l per hour.
Another alternative was to get the fluval biolife filter which has a turnover of 490 litres an hour and run that with an eheim 2224.
What i would like to know is if i have filtration well over 1000l per hour then will that make too much current for my fish? the tetras wont mind, but my angels will i think.
I thought about undergravel with powerheads too but ive been told i would need to strip everything down every 6 months to clean it.
I'm open to other suggestions too.

 

[black angel]

what about this? as i've said it doesnt have to be eheim

http/cgi.ebay.co.uk/ws/eBayISAPI.dll?Vie...4365085915&rd=1

 

[Tolak]

In my overstocked 55 gallon, I've got 2 Eheims, a 2222 & a 2224, an old second hand hob that is around the size of an Aqua Clear 200, & a home made filter that has a 1000 liter per hour submersable pump pulling water through a 1 liter bottle full of foam. 7 dollar size angels, 20 or so juvies between nickel to half dollar size, and 3 large plecs get by just fine with the current.

A lot of it has to do wih where you direct your water flow. The home made job sits on the bottom, shoots the current across the bottom of the tank, towards the intakes of the other 3 filters. I vac the gravel every other week, not much debris, except behond a piece of driftwood & to the side of the pump itself. Angels aren't bottom dwellers, it doesn't bother them. Plecs love it.

The 2 Eheim spray bars are on the back of the tank on 1 side, 1 above the other. 1 sprays horizontal across the surface, 1 sprays vertical straight down the back. Angels don't really hug the sides of the tank. Plecs surf the spray bar.

The hob on the opposite side of the spray bars is the only real current producer, and it isn't that bad. The angels get by just fine with it.

1000 liter per hour isn't bad at all, just watch where the current goes. I know from cleaning the 1 filter that 1000 liters per hour will knock a full grown angel across the tank, have to remember to unplug it.

Undergravel is messy, especially in an overstocked tank. Use the powerheads to make a cheap filter, you'll be better off.

Tolak

 

[black angel]

Thank you Tolak, just what i wanted to know.