Pink blodges on sand

It's probably Cyanobacteria. Sometimes it's caused by old lighting, sometimes low flow, and sometimes excess nutrients. I'm sure if you do a search you can come up with all kinds of info on it.
 
Lakeside,

I believe your previous post mentioned that your NH3 was above 0 and your Nitrogen was 0. That makes me think your tank is brand new ( going through ammonia cycle). That would cause excellent food for the Cyanobacteria.

As Ken says, light also makes a big difference ( as I recently discovered first hand).
 
To much light or not enough?

Yes, it is a newer tank setup.

It went through its cycle. Used water from a mature tank setup. Cycled with LR for 2 months. We were the ones at the Frag meet in scotia that didn't take home any Frags because of it:( I would have liked to tho. But i knew it was a bad idea. Have been taking things slow.

I believe like Ken says, maybe dead spot low flow. I will prolly mod and make a dual outlet and go from a maxi-jet 900 to a 1200 see how that does.

Ammonia was 0 to .25 everything else is zero. No it may basically just be zero

Kris

PS I have never noticed it in any of our other tanks because they have crushed coral and get Vac. every other week.
 
Adj. how? If i put the flow towards the front with some surface agitation it creates sand bars and bar spot along front glass.

I can angle it more towards the rock.

I think I'll just break down and mod it with modular pipe/ fittings to a dual outlet or use a Flo rotating deflecto and see if i like those any.
 
Yeah call it "Bar at Sands edge" Become the new hangout

Not a bar, I meant Bare spot.. Slippin sorry. lol
 
When it comes to Cyano and lighting, it typically starts with the age of the bulbs. As you gain hours on the bulbs, they tend to shift spectrum output. This sometimes creates an ideal situation for Cyano growth.
 
Ken is correct,

the lighting portion is connected to the age of the bulb.

As far as flow - I would guess you can direct flow directly on the cyano and get - well, spreading cyano.

If your bubls are old, it's time to change them anyway. If you think your bulbs are new enough and you have at least 2-3 watts per gallon, then let time fix the problem. Though, I am still confused about the Ammonia being over 0, but not the nitrogen by-products, are you using a PS?
 
Bulbs are new. The setup has been up and running since mid Jan.

The bulbs were not in use for sometime. Would guess a month of use on the bulbs.

2x27 watt PC's on a 12 gal Nano Aquapod
w/ 2 1- watt Blue leds

I know the water flow is almost certainly dead in that area. Due to being behind the rock. Its also semi shaded from the light not alot.

Temp 81.7 deg
SG 1.025
Ammonia 0
Nitrite 0
Nitrate 0

I do not have a phosphate test kit or a calcium test kit. I guess I'll add to the shopping list.

I was not testing TDS before meeter should be here this week. Possibly something to do with it? Last water change I didn't use RO/DI water and used tap water.

The RO is a house system with pressure storage tank for drinking water.

It has sediment/ carbon filter
RO membrane filter
& Carbon media filter

I either use that or spring water for water changes.
 
part of the natural cycle of tanks. It will come and go for about 6 months, depending on a lot of factors. Do you have some well seeded live sand that you added to the tank? That will help also and then add some sandbed snails.
 
I can give you some when you come by, and we can grab a scoop from the tanks as well. Just beg people for a cup whenever you can.
 
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