"gothicat" wrote in message
...[color=blue][i]

Mary Burns Wrote:
"Sue" wrote in message
...-
What additional filter are you using? The Juwel filter is rated for
the
tank with a community of small fish, not a highly stocked tank with
larger
fish.


-

The Juwel powerheads claim 1000l/h, standard on 240litre upwards, is
enough
for tanks up to 500 litres, reading that of box with new powerhead.
The
boxes tanks come in show angels, which need very clean water. If your
information is correct, I wish Juwel made that clear before we buy
their
tanks.
What do others think with Juwel tanks? Mary

Hi Folks,

Thanks for your quick and useful replies.

I've just stripped out the tank today as described in my initial post,
except removing the gravel - hoovered with siphon instead).

My water quality is: 28degreesC, 7.1 pH, 0 ammonia, 0 nitrite, 40ppm
Nitrate, 10 dGH, 4dKH, 0.5 phosphate. My water quality has remained
like this (approximately) since the tank was set up. Sometimes the
Nitrate gets quite high, which is water change time, however I do use
the green (nitrate) juwel filter, so it surprises me that the nitrates
increase so much.

I bought the tank and all fish at the same store, I told them I was a
complete novice and asked them to advise me with stocking my tank.
They didn't tell me that the filtration may not be suitable, however
there have been a few things I've since found out where they have ill
advised me!

Should I consider a new powerhead?
If so, which power and brand would be best?

What kind of additional filter would I need?

Any advice about the treatments? Would it be safe to use these with the
loaches?

Sorry to sound so clueless!
Thanks again for your help.


--
gothicat



Before adding any more treatments, who is still sick now and what symptoms?
Can you give the exact munber of each fish and approx size now, to see how
(heavily?) stocked it really is.
How often do you water change normally?

The 350 trigon will hold about 80" of fish, maybe less as it's deep and
corner shaped. Your clowns/shark/plec will all get very big and need a 6'+
tank in time. I'm planning one already as 5 of my clowns are nearly 4"
(without tail fin)
2 water changes a week(15% each time) nitrate and carbon sponges every 4
weeks will all help in the meantime to reduce nitrate to perhaps 20 quite
quickly. More than 2 or 3 a week may stress clowns too much.
How often do you feed them?
More plants will help, you can get plant anchors that will keep them planted
until they root properly.
Good water params will reduce need for treatment, trying to keep nitrate
around 25 in heavily stocked tanks is hard, but worth the maintance.
You need new carbon between treatments to be really effective.
When you post stocking levels, additional/new fitration can be sorted out.
Mary