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[banditpowdercoat]

I bet in a month, my 150 will be starting the Cyano. Just like the 45 did. Battled it for a year.

[Aqua-Digital]

Hi

Thanks for the photos, looks like good candidate for all sorts of things

I need first to know what we are dealing with, what is the devil inside

Can you give me full tank spec including

pH
PO4 - heat test
Nitrate
fitration method
lighting cycle
sand bed depth
live rock or not?

I will then give you a dosing regime for this. But from the looks of the tank you will need to do some maintenance steps firect, the products for reviewing are good, but lets give the a head start

[Mrfish55]

I will test the parameters this afternoon and post the readings. Equipment as follows
-135gal glass tank dual overflow
-Lighting 2x 72" VHO T-12 Icecap660 10hours on 14 off (bulbs changed annually)
-35 gal sump
-Older Tunze skimmer (planning upgrade)
-Lifeguard 40w UV sterilizer (new bulb every 6 months)
-Approx 100 lbs liverock (10+ years old, good coralline coverage, pest free)
-Substrate approx 100lbs very coarse coral rubble
-Circulation, 800gph return pump and Vortech MP20

Fish load ( All fish 7 years old and very healthy)
-1 Majestic Angel
-1 Threadfin Butterfly
-2 Green Chromis
-1 Ocellaris Clown
-2 Cleaner Shrimp
-2 Yellow tail Damsels

Minor Hair Algae and persistent Cyano problem, suspect problem is Dad overfeeding the tank, I do 30 gal waterchange every 6 weeks, not dosing any additives currently.

[Aqua-Digital]

Ok

Gonna need those paremters though

Nitrate and PO4 especially.

[Mrfish55]

Parameters
-PH 8.1
-No3 19.1ppm
-Phosphate 16.2ppm
-Ammonia 0
-Nitrite 0
Readings taken with Medusa Colorimeter, I am mixing water as we speak to do a water change.

[Aqua-Digital]

Bingo, there is the little devil

PO4!

Do a heat test at that level and it will be higher than that.

First thing important here is regular water changes, what is happening by doing such staggered changes is the PO4 is leaching into everything it can including the live rock, in fact your live rock is one big yummie PO4 bath right now.

You need to do at a one off 25% for two weeks followed by weekly 10%.

The Ultra Life and the Ultra Bio will help significantly in skimming out all the nutrients, but this will not be a quick fix under no illusion.

If you are game I will send you the Ultra Life and Bio, but you will need to be strict in following what is recomended.

LMK

[Mrfish55]

I'm game, I will be doing a 30 gal waterchange tomorrow and will repeat every 2 wks untill the numbers get back in line, did'nt think it was that bad as the fish are looking real good.