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che_rog 02-23-2007 07:01 AM

UV Units Any thoughts? & Stocking Levels for my Tank?
Hi all back again after a few weeks

New tanks is going well and only lost a small angel so I am resonably happy as cycle has been going for 3 weeks.

I am thinking of being a little cautious and putting ina UV steraliser unit on the output of my Fluval 405.

I am thinking about and 18W unit for a tank that is 4 x 1.5 x 2 (L x w x h) and you can pick them up on Ebay


Second question for those interested

For those interested my current stocks are

3 x angles
1 x butterfly fish
1 x clown loach
2 x pepper cats
1 x sucker cat
2 x gouramis
3 x rainbow fish
3 x cichilds (ornage head or Geophagus Rio something)

I dont really want to add any more with exception two silver sharks.

Is this stocking level 2 high for my tank size ?? They all appear happy and get fed frozen brines and worms interspread amoungst the staple flake and pallet food,

Cheers Che

Daz 02-23-2007 07:30 AM

Why a UVS?

che_rog 02-23-2007 08:04 AM


I have been told they (UVS unit) help keep the water clear and cut down on any diseases etc.

I have what I am told is an adequate filtration unit. Internal powerhead with sponge which I clean weekly and also the cannister which is about monthly.

I am new to this and hence I am asking are they a gimmick or worth the money.


englandbloke 02-23-2007 09:43 AM

ive been thinking of getting one 2. think i saw that1 on ebay as well. we have had 1 in our pond for a few years but didnt realise you could get them for tanks as well. as for getting one i dunno yet

musho3210 02-23-2007 04:14 PM

you dont actually need one, what they do is kill every free swimming living thing that goes through the sterilizer. So the water will have no free swimming bacteria or paracites, prolonged use of it will actually make the fish weaker since the immune system hasnt been used in a while and starts to be prone to diseases. IMO you can get one but only use it when you have a free swimming paracite or free swimming algae.

Daz 02-23-2007 04:22 PM

Wow agre with mush, nice one,there really is no use in FW its a gimmick. :D

rand98989 02-26-2007 01:39 PM

musho3210, do you have any web info/links available to back up your claim? I would be interested in reading up on this

herefishy 02-26-2007 08:49 PM

Ultraviolet light kills bacteria indiscriminately. You need the good bugs and some of the bad bugs too. By having a few of the bad bugs in the eco-system, your fish will develope an immunity, of sorts, and actually be more healthy.
I've tried UV sterilizers before. I don't use them now, I lost too many fish when it came time to move them to more adequate quarters. The only way I would run UV sterilizers now would be to use them on all of my tanks. This is not a feasible option.

Slider 02-27-2007 03:06 AM


I recently bought a second hand UV steriliser for my 63 ltr freshwater tank. The reason for the purchase was that i had a massive algea bloom at the time (looked like a swamp). After a week of havin the steriliser the water was crystal clear, as very impressed.

However i now still have it connected but leave it turned off, for the reasons given above, it kills of bad and good bacteria.

So i guess u should only really get one if you've got a problem with algea and other methods have failed.

musho3210 02-27-2007 05:09 PM

if you find a good deal, buy one of course, its always nice to have these things on hand, they work great on ich (only during the ich's free swimming stage) as well as other bacterial infections where the bacteria is free swimming. Also good for killing free swimming algae spores (all algaes have these to reproduce) which means your algae will stop reproducing. If its green water it will be gone completely. Maybe if your quarantining a fish use the UVS to kill of anything he brought over from the pet store.

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