Hi guys,
I have a 700 liter tank running for about one and a quarter years now. I relocated about 3 months ago, but ever since I struggled to keep algae blooms under control.
I've tried the usual advice; minimal light time, reduced feeding intervals and quantity, introduced more clean-up-crew members (snails, hermits, tangs), replaced the T5 tubes, got my water tested at the local pet shop (N's and P's are relative high), alkalinity a little bit low. I've performed a few water changes and tried to clean my rocks and gravel every day for a week, I also build an algae scrubber (had two harvests so far)...I've installed a new return pump which has a 3x higher pumping capacity. I've noted a tiny reduction of algae, but the cyno covered all my gravel. I siphon my gravel with every water change.
I test my water every other day for N's and P's but it remains sort of constantly high.
I'm fed up with the problem. The advice that I got so far is either watered down or very specific to certain aspect of it, or it costed me a lot of money.
So now for more questions:
a) How do I determine whether the flow induced by the power heads in the display tank, is enough?
b) Should I aim the power heads directly at the live rock, or more to the open spaces around it?
c) I've read an article in the "Reef Keeping" magazine; in there the guy say that one should hardly every siphon the gravel. Should I stop?
d) What haven't I considered yet?
I must try to sort this problem out soon, because I can't look at my tank any more and consider stopping it due to the escalating expenses.
My tank setup:
Location of Pumps: