Algae??

[treetopflyn]

Have had an outbreak of something over the past few weeks. The tank has been set up for 1.5 years and all fish and corals appear to be fine but I am very anal when it comes to my tank and the outbreak is driving me crazy. I have never had an issue like this before.

Recent readings

Phos -.03 Changed Phosphogaurd when I noticed out break
Nitrates- 0.02 Did large water change (40 gallons) when I noticed out break.
PH- 8.2-8.3
Salinity- 1.0255
Calcium 400 ppm
Alkalinity 10 dKH

I did a 4 day lights out over the Holidays as wel

All Top-off and water changes are done with 5 stage RO/DI. The filters are over a year old but both my TDS meters read zero on out coming water.

I am thinking I need to do another LARGE water change, add new Phosphogaurd and add more blue legs (I usually have 50-75 but only have about 20 right now)

The only other thing I can think of is I had a Diamond Goby but lost it shortly before the Outbreak. Could it really have been keeping the sand that clean?

Thoughts??

 

[roblack]

I would change the RODI filters. "0 tds" can be deceiving, does not necessarily mean that your RODI water is optimal.

 

[tmulrney]

Test the RO coming out of RODI for phosphates and go from there. You might have phosphates in Ro even with TDS of zero.

 

[Jpugh73]

Do you vacuum. Its looks like the grain size is pretty big. That could be a source of your problems

 

[treetopflyn]

Do you vacuum. Its looks like the grain size is pretty big. That could be a source of your problems

I don't "Vacuum" but I do take the top layer off with each water change.

 

[nivram]

I'm with Rob. Change ro filters.

 

[ocean82]

Run some carbon

 

[treetopflyn]

Changed everything out

New 98% Membrane
New Chloramine filters
New Sediment filter
New Di resin

Water going in is TDS165. Water coming out of Filters and Membrane TDS 10.(higher than it was before I changed everything) Water coming out of Di TDS zero

Going to do a large water change this week, add more hermits and change out the GFO. Hopefully that will fix the issue.

 

[treetopflyn]

Been a week since I made the changes and no sign of the Algae and I haven't even had to clean the glass yet. Looks like that fixed it. Thanks for the advice.

 

[rps3]

Glad everything worked out Kevin.