Backyard Aquaponics
A place to discuss aquaponics

I remember reading somewhere that a large percentage of frogs carry a disease /virus deadly to trout . Cant rememeber where I read it but it specifically said trout , not any other fish

maybe look for frogs in your system

Bunnings here sell Lake Salt from the WA Salt Works. It is harvested from wheatbelt salt flats. I just added 20kg to my system

I also use that Natural Lake salt from Bunnings and have never had any problems with it.

Same here... Found them at a number of B's.

Used them on my trouts when they were recovering from a die-off possibly due to uneaten food/dead fish due to water quality.

what's a 20 Kg bag worth ???

Jessy, if you talking about my post above for the B' salt. $6.72 or $6.92, can't remember which, but 20cents diff.

Its around that

Yeah same price for sunray over here excepting it's a 25kg bag.

99% sure the stuff we get is as well.

Sorry mate. Just check. It is a 25kg bag. And I tried looking for sunray here in WA, but cannot find it.
But the back of the bag does say something about helping the lakes reduce salinity in WA, so maybe it is an effort to use salt from WA rather than buy salt into WA.

It was plain pool salt. I am leaning away from the salt as i put the salt in downstream of the fish so it had to go through the growbeds before it got to the fish, yet the fish started to die at the tank furthest from the growbeds. I think the hard pruning of the tomatoes reduced the nitrogen uptake and caused a spike which poisoned the fish. they then took several days to die. by the time i saw dead fish the spike was gone, but the damage done.

i think next year i will be alot more conservative in my stocking and test the water more often

Nitrate spike take years to kill fish I thought. I can't imaging pruning tomatoes would spike ammonia or nitrite.

Well I thought something along those lines (not years, coz I can't think that far).

how strong was the salt water when it went thru the growbeds on its first run? You may have nailed your bacteria.

i put 2kg into the sump and let it mix from there, so the salt in the growbed may have knocked the bacteria. it was at .37ppt so 2kg into 4000lt brought it to .8 ppt, still very low, but a much saltyer slug may have gone through initially