Water Testing / What can you tell?

Leonard Sixt

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Seven month old Redsea Max Nano tank. Been reading the same MOL for months now. IDK, I have a tough time reading the test kit results.

My eyes say: zero ammonia, zero nitrate, zero nitrite, zero phosphate, and about 8.3 8.4 PH.

Have had these same readings since about when the tank first cycled.

My alk has a tendency to be a bit high 10 - 11.2 typically, and my calc is a bit low 400 MOL. Just changed two part to dose less of part B - try to bring alk down, and with luck bring up calc at the same time.

That said the only death I've had has been my duncan. It was really healthy, then just went down hill. I caught a blue damsel nipping at it. Removed the damsel (if that was the cause) but it was too late.

Also have a favia that lost about 75% of itself. Hard to tell now if what is remaining is healthy or just hanging on. Can't make the call. No signs of growing, and it had been doing well. Seems it and the Duncan went south about the same time. There WAS a very low drop in Calc in June (down to about 350). But nothing else out of the ordinary.

Have very small amount of cyano on rocks (bare bottom with LIFE ROCK as my base rock). Nothing that bad.

I've no idea why cyano would be present (unless it's just normal for this phase of the tank). What happened to the duncan, why the favia died off (partially).

Did dose nopox early on, but stopped now for maybe 2-3 months. Only dosing two part now.

I have a kenya tree coral super healthy, zoa's doing well, rainbow glove doing super, pulsing xenia doing very well, blaso popping new heads, gsp doing well.

One ricordea that split in two early on (5 months about), but has shown little growth since, paled up a bit, but no signs of fading away. Just dormant.

Using the AI light that came with the tank and the BRS settings (although I do leave 4% blue and uv on before / after ramp up / down).

Not sure I'm asking anything here, just blathering on about what's going on.

I would like opinions on my test vials - just to double check myself that I'm reading them close to reality. Any additional comments are welcomed.

api.jpg po4.jpg
 
Leonard, if you where dosing NOPOX early on with no N03 and P04, it's likely it's stripped them out. Your corals need some N03 and P04. N03 at 5-10 ppm and P04 at trace around .02.

The lack of nutrients is the likely cause of the cyanobacteria you have.

To increase your nutrients, take your skimmer off line or drop it's bubble level down to keep it from pulling waste out. Feed heavier till you register N03 and P04.

Its possible that the coral recession was due to lack of nutrients or possibly too much light intensity.
 
I've downed the skimmer to as low as it can go. Not taking much out. Been slowly increasing feedings also.

I've heard both sides - high nutrients bring on cyano and low nutrients bring on cyano.

More pictures....

tree-pulsing-gsp.jpg glove-mushroom.jpg
 

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