Specks, you might want to try reverse osmosis water and mix it with your tap water to bring the nitrates down to see if that helps you any.
That will certainly help, but if it's not something that can be maintained on an ongoing basis then it's of no use
And the RO route is time consuming and can be quite costly.
I for one can't have RO water - I live in a rented flat where I can't alter any plumbing and there's just no space at all to have store the RO water for approx 80 gallons in tanks alltogether. I neither have a car to collect RO water from a lfs - on top of which it would be too expensive to buy water and then adjust it
Specks, I also a Juwel 180 and I also have anything between 20 and 40 Nitrates ppm from the tap.
You have 2 x 25 Watts on the tank.
I suggest you buy yourself a cheap timer and start a lighting regime. Try something like :
7.30am - 12.30 light
12.30 - 17.30 no light
17.30 - 10.30 light
or adjust to your viewing hours. But have at least a 2 hour (up to 5 hour) break between the two light periods a day.
Try that setup for a couple of weeks and see how it goes. Give your tank a good clean and remove as much algae as possible at the same time.
I'd also like to add that the
only algae eating fish I have in my tank, is a CAE - and they aren't even the best algae eaters !
My phosphates are also
very high at around 3-5 ppm (depending on what the water company feels like pumping into my pipes) - so I (along with other Thames Water users) have more phosphates than most people have to deal with.
And I have minimal algae.....
just a thought.