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PostPosted: Sep 3rd, '13, 16:34 
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Sounds good make sure the kettle is on

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PostPosted: Jan 22nd, '14, 21:52 
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Haven't seen anything from you in ages BF. Everything running okay?

Regards, Martin.


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PostPosted: Jan 23rd, '14, 20:17 
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Yes all good here thanks Martin,
The AP systems have been very stable for several months now, no surprises, no dramas. We had a three hour power outage today, I came home from work to find the back up systems taking care of business until the power went back on.

In the mean time we have built another nursery and planted up more of the back yard, I'll take a few updated picks on the week end and put them up next week.

Cheers until then..

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PostPosted: Jan 23rd, '14, 20:24 
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That's great BF. Good to hear and look forward to the picks too.

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PostPosted: Apr 2nd, '14, 18:20 
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Aghhhhhhh :-x :-x :-x bloody rotten fungal problem in system 2 Again.

Had this happen back in November 2012,

Lost 1 fish about three weeks ago, the fish looked fine with no visible symptoms and the first one lost for many months.
Just as a precaution I salted the entire system to 5PPT.

I lost 2 more fish a couple of days ago and again they looked OK no discoloration no symptoms.

Today I came home to one more dead fish this time showing very severe symptoms, as per below photo I'm pretty sure its a fungal issue.

I have taken the following drastic action to hopefully save the others and get things back on track.

1 Isolated FT from the rest of the system
2 Stopped feeding
3 Dropped volume to 500L
4 added small pump to circulate water in FT
5 2 X 3inch airstones cranked up
6 did 1/3 change with fresh water
7 Salted FT to 10 PPT

Next steps will do another 1/3 water change tomorrow morning ( have already salted top up tank to 10PPT)
will maintain 10PPT and twice daily water changes until Saturday (2 more days)

Will reduce salt to 6PPT then continue with partial water changes for another couple of days and then connect back up to the rest of the system.

In the mean time I have temporarily plumbed the main pump to go from the sump straight to the GB's, this way I can avoid salting the GB's to 10PPT and keep the plants looking good.

The positive to come out of this so far is that the spare pumps, piping, fittings and clean 200L drums I keep around the place meant I had everything on hand to do the job in about 2 1/2 hours all up.

I'll update in a couple of days (hopefully with good news)


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PostPosted: Apr 2nd, '14, 18:59 
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Your doing everything you can mate, hope it sorts out

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PostPosted: Apr 2nd, '14, 19:16 
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Thanks Charlie, the fish are up around the 250mm long now too, so I really don't want any more biting the bullet.

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PostPosted: Apr 2nd, '14, 19:19 
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Yea when you have had them for a while it makes it all that more harder to loose them. Got my fingers crossed for you

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PostPosted: Apr 3rd, '14, 04:21 
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Give me a call if you need a hand mate no problems.

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PostPosted: Apr 3rd, '14, 20:33 
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Thanks Bear, Ive got it under control now mate. :thumbright:

Ive got a routine happening.

I run the outflow of the pump outside the tank and pump out about 1/3 volume

then top up again by dropping the pump into my 200L drum and pumping the fresh pre salted water back into the FT.

then I refill the top up drum ready for the next change over with 200L of fresh tank water mix in 2 Kg of salt, I also chuck an aquarium heater into the drum to let it warm up to about 25c (close to FT temp) by the time I'm ready do use it again.

The whole process only takes about 1/2 hour.

The fish are looking OK swimming around as per normal, I'll still drop the salinity back to 6PPT on the weekend and adjust the whole system to the same level. Hope to have everything back on line by Sunday arvo. I wont feed for a few more days after that. the Silver fingerlings in the sump are still doing well and looking very healthy.

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PostPosted: Apr 3rd, '14, 21:23 
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Hey BF, how do you "drop the salinity back to 6PPT on the weekend"? Do you do a partial water change and achieve your goal by dilution?

Regards, Martin.


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PostPosted: Apr 3rd, '14, 21:38 
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Yea keep the temp up mate, it's your best chance. You are doing everything I would consider a strategy

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PostPosted: Apr 4th, '14, 19:55 
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MartinC wrote:
Hey BF, how do you "drop the salinity back to 6PPT on the weekend"? Do you do a partial water change and achieve your goal by dilution?

Regards, Martin.


Yep that's the plan Martin I kept the tank level at about 50 to 60 % to save some water and salt so I'll just top it up to the high tide mark adjust if necessary and hook everything back up to the rest of the system , which is already at 6PPT

Checked the fish this arvo during water change, all seem to be OK no symptoms, salt still at exactly ten PPT (nice easy sums 1Kg to 100 L)

A couple of them are plate size now so I'll pull them out for lunch tomorrow. :thumbright:

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PostPosted: Apr 4th, '14, 20:06 
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Charlie wrote:
Yea keep the temp up mate, it's your best chance. You are doing everything I would consider a strategy


Thanks Charlie another positive with this whole situation has been the ability to go back though my old post's on my previous disaster and the advise I got from a few of you blokes back then, just to double check I'm on the right track.

Long term I need to understand why these things happen, the only difference with that particular system is that I pump up from the sump into the FT and gravity feed to the GB's.

The other system is different in that I pump from the sump into the GB's and the four of them drain back into the FT causing a lot more water movement in the tank.

I don't think its related to DO as both systems have two large airstones going 24/7, stocking levels to GB volume are very similar your thoughst would be appreciated.

Cheers BF

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PostPosted: Apr 4th, '14, 20:35 
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Thanks BF. Nice going.


Regards, Martin.


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