What is this and is it bad?

[SamLars]

Need some help with what this orangish brown algae is and how we can fix it..if we need to?
Tank is several years old, nothing has been added recently other than water for a water change.
Seems to be spreading all over everything..

 

[monkeyCmonkeyDo]

Cyano. Diatom so far looks like. What kind of water did u use to mix with? Tap?
You can increase.flow and filtration?
D

 

[SamLars]

Cyano. Diatom so far looks like. What kind of water did u use to mix with? Tap?
You can increase.flow and

Water change from reverse osmosis water from the fish store.
We have a small biocube (16) so not sure about increasing flow? Can certainly change out filtration. Will try that now! Thank you.

 

[monkeyCmonkeyDo]

Yup add some charcol. Carbon. Chemi pure regular or the elite. You have a powerhead or just the return for flow? Over time your gonna wanna increase flow at least a.little imo.
Slw-5 pump would be great or the slw-10 and turn it down a little.
These pumps u can also get a fish guard for. Hths!
D

 

[Vested]

If you're getting water from the store I would bring some in from your tank next time and ask for them to test it. Let us know what your levels are at, will let us know if anything is out of order.

 

[monkeyCmonkeyDo]

Yup. We would like to know the salinity at.least of the water theyre providing for u.
Basic ro water isnt as good as rodi but better than tap for sure. Lol.
D