HMA Filter?

Scrapman53

Member
Apr 21, 2009
389
0
16
Fife Scotland.
First of all. Hi guys, it's been a while.

I'm having problems raising my L134 fry. Last year they were fine, and I raised and sold a good few spawns.
Towards the end of last year, the fry started to die off at the eating stage just as they had absorbed their yolk sack. Then the adults had a break, so I couldn't do much about it at that time.
They've started spawning again, and despite me doing daily waterchanges like I did last year, I can't seem to keep the fry much past the initial eating stage. Water parameters are Ammonia 0, Nitrite 0, Nitrate 20 or less, PH around 7 or less. I've started to use Microworms and some of them seem to be living for around a week after the yolk sack has gone.
Next step I was thinking of getting a HMA filter incase something has been added to our water supply that I don't know about. Would I be better with a 2 stage unit or a 3 stage one?
I have a RO unit that I've not used for a wee while, but kept it full of water to save the membrane from drying out. Would it be worth while trying an RO tap water mix for my small daily water changes?
This is really getting to me now as I thought I had cracked it last year. It's heart breaking watching all these babies die.
 

D-MAC

Member
Jul 24, 2009
992
0
16
Lossiemouth
www.danditropicals.co.uk
Hi Pete, been a long time :yes:
You will probably need to use r/o water again so you can control what you are putting into the tank...Don't use the old membrane as it will be no good now if its been sitting idle for a while, best to replace the cartridges and membrane...They need to have water passing through them weekly to stop a bacteria build up
 

Scrapman53

Member
Apr 21, 2009
389
0
16
Fife Scotland.
Ordered 2 new filters and a membrane today, so hopefully no more lost babies. But if I go for a 50/50 mix of RO and tap water and they still die, what should I try next?
 

Brengun

Global Moderators
Staff member
Apr 22, 2009
5,041
4
38
62
Burrum Heads, Queensland, Australia
Yes its something to do with somethings gotten old.
Old tank sydrome or water filters need replacing.
I had it in one tank only and the only difference with it is the gravel tends to buffer just a little bit higher than the other tanks. I changed over part of the gravel and had no more problems.
 

Scrapman53

Member
Apr 21, 2009
389
0
16
Fife Scotland.
Right. Here's my test results.

Tank water.

PH 7.2
KH 2
GH 4
TDS PPM 113

Tap water

PH 7.2
KH 3
GH 6
TDS PPM 150

PS. There's no substrate in the tank.