Leaky Fluval 404, ammonia, dead fish, Oh my!

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Batboi3000

Feeder Fish
MFK Member
Aug 30, 2009
717
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Huron, SD
Hey All!

I have a couple Fluval 404 canisters that have been great filters however one of them seems lo like to leak a little. This Wednesday I noticed a little too late it had been leaking for awhile and the tub that the canister sits in was full of water and it had actually over flowed into the base of the stand and down into my carpet... Crap town. For whatever reason it is leaking slowly with one to two little small streams down the side of the canister from under one of the handles/locks. Have included a picture. So I don't know if it is leaking out the seal from where the motor attaches to the base and then just running down out of that point of the handle. No idea...

On other news I am realizing I don't do enough water changes on my 125 gallon or don't have enough filtration. Far as filtration, I have had 2 Fluval 404's and a penguin 350 on the 125 gallon. Didn't think I had too many fish in there, but maybe I do. I try to scoop out all uneaten food so as to not have that ammonia risk and dirty water. Most of my cichlids have not had the appetite they usually do. I think I have a bit of a case of lymphocystis in the tank, but I think my big 10" Green terror (who died last night) was also starting to battle Hole in Head. I did a pretty good 50-60% water change this Wednesday night after realizing my filter had flooded, and refilled it like I always have. Never had any issue with water before. I took out the carbon and after refilling the tank put in some medication for the hole in head, a medicine that fought protozoan parasite. After refilling the tank, some of the fish looked like they were breathing really hard. I had that happen before and had attributed it to the water being too warm and an oxygen depletion in the tank. So I made sure the water was a better temp when I put it in. The next morning I had 3 dead zebra danio and a dead african featherfin, and the Green Terror still looked like crap. I did a water test last night and the water was about 1.0 ppm on the ammonia scale. Everyone else in the tank looks fine still this morning, but I am going to pick up some stuff for the ammonia over lunch today and try to knock that out. So naturally now I have a few less fish so the ammonia should start not being as high. In looking at my signature you can see my current stock of fish, but know that the texas hybrid and jaguar are barely 3" juvies, so everyone in the tank is hardly full grown if that helps.

SO! If you have made it this far in my novel, I appreciate your time. Any thoughts on these situations? Could a change in only 50% of the water be a shock enough to the fish that it would still kill them just purely out of not being use to water changes often enough? Would love to get your thoughts.

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2012-12-12_22-33-44_614.jpg
 
are the rubber seal gasket rings seated properly?

Far as I know... I will check over lunch again. Most times after cleaning out the filter and media, when I put it back together and get it running again, it will leak for a couple minutes till it really gets cycling and then it will stop leaking. I guess this last time it must have got a bit backed up.
 
I have had this issue,make sure your head is seated nice and tight and even,and that you have no little cracks in the cannister,it's best to push down evenly then clamp shut,also could be your lines are not seated and connectors are tight,it's always some little thing you miss


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I would say the majority of people here do 50% or more WCs with no issues at all. However these tank are healthy and maintained. A poorly maintained tank, or a tank experiencing old tank syndrome, large water changes can be deadly. Unhealthy, stressed fish can't handle the flux in water parameters.

In situations such as this it is better to do multiple frequent small WCs
 
Make sure there is no tension on the hoses coming from the can, I had an old xp4 and the hoses were a bit snug and stretched and that's what caused my slow leak as you described, also, I'm hoping you shut down your filter and Atleast opened it to see before asking? It may be simple and something a quick clean may fix.


Definitely need to step up the wc, atleast 1 50-60% wc per 5-7 days imo but its whenever your nitrates spike, I like to change mine at 40ppm, but you also have ammonia and this is much more toxic, not sure if your tank is mini cycling or what but I would start by cleaning the filter out and doing every other day 30% wc till that ammonia drops!

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