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28 Posts
Discussion Starter · #1 ·
The back story:

This tank is set up in the office of the company I work for. The building was vacant for almost 10 years so the pipes are full of sediment.
This is why I have the pre-filter on the hose filling the tubs. I can only do this on Wednesday or Friday as the water is cleaner. I can not fill the tubs on a Monday because even with the filter the water still gets an orange hue.

About one month ago I noticed a few fish heavy breathing and then within a week they die.
I'm up to about 10-12 dead and some happen almost over night.

Just recently, one of the main water pipes broke and needed replacement so I'm not sure if this is part of the problem.

Here are my parameters.
125 gallon been running since Feb. 2018
Running two fx6's and one AC110 and Aqueon 950 pump for surface agitation.
I clean each filter every six weeks.
Water temp is 79 degrees.
I do 50% water changes every water changes every Monday and Thursday doing a gravel vac at the same time.
I pretreat two 30 gallon tubs with prime and bring the temp to match the tank. When filling the tubs I use a filter on the hose to remove as much sediment as possible.
I test 2x a month.
Ph: 7.8
Ammonia: 0
Nitrate: 0
Nitrates: 20-40 since May. Prior to this mostly 40-80. Cut feeding and changed from pellets to flakes.

Stock: All Mbuna. Around 40.
Feeding schedule:
Mon.- Fri. OMEGA One Veggie Kelp 1x a day
Sat: North Fin 2mm Veggie pellets. 1x
Sun: No feeding

28 Posts
Discussion Starter · #3 ·
The pipe did break before the deaths.
All the fish would eat except for the few that would hide behind the intakes or the surface.
They would all be heavy breathing.
Feces is this and food colored. No thready white or clear.

I'm thinking it might be columnaris

Stock: Amazing thing is they all get along pretty well.
Williamsi Makonde Blue Lips
Yellow Tail Acei
Electric Yellow Labidochromis Cichlid
Orange Blotched zebras
Cynotilapia afra (Jalo Reef)
Cobalt blue zebra maylandia callainos
Labeotropheus trewavasae (Chilumba) Ochre
Albino Pseudotropheus socolofi
Cynotilapia Hara "Gallireya reef"
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