Ok. Does WNL stand for (Within Normal Limits)?
Do you know the EXACT readings of the kits.
Nitrate of say 30ppm might be within normal limits (not in my book) but it would contribute to your algae problem.
any ammonia and nitrite is above where it should be.
Phosphates have absoulty nothing to do with ammonia, nitrite, or nitrate and can not be derived from any of those results. Phosphates are known fuel for algae.
What do you feed? How often do you feed?
When did your actinic light burn out? Could this have been around the same time frame the cyano
started to take over?
The reason the slime is growing on the base rock more is probably because it is not overly covered with coraline yet.
You need more flow. You should shoot for at least ten times the tank capacty in flow rate. Given that you have a PH driving a UGF
i doubt your even getting 350GPH as there will be some drain on the PH's capacity when its trying to pull water thru the substrate and filter plate.
There are many good mailorder sites on the net for aquarium goods. I understand your desire to help out the local shop but there are times that convience should take precidence. Your actinic bulb needing replaced and getting some test kits for example. Waiting 3 weeks for a testkit would drive me nuts. Also why drive 2 hours for a bulb when you can order one over the net for probably the same cost if not cheaper after facrtoring in gas and time.
--> lighting specialist
just to name a few.
Yes a pic would help if not to much trouble.