Are these diatoms? Bloom coming soon? w/ pics

[spicytofu]

Looking at the pics, should I be expecting a bloom soon?

Info of my tank below, just FYI.

Its a fairly new 125G tank, about 3 months old. I did a fishless cycle for 2 months until all parameters were in check and the buggers were downing 5ppm of ammonia to 0 ppm nitrAtes in 24 hrs.

Added a CB shrimp and a PBT and it has been a month.

Last week, I decided to go to the LFS and buy a rock to seed some coraline algae. The rock looks like it was covered with it. Today, I noticed that the top parts (facing the lights) have turned brown. The sand and rocks have developed brown "rusty" spots which leads me to think its diatoms.

I haven't tested for silicates or phosphates since I am using seachem phosguard (doubled the recommend dose for my tank size)

Water and anything wet touching the tank is RO/DI, tested 0ppm. Caribbean sea aragonite sand and rocks, etc. Anything I put into the tank I made sure it has no silicates or phosphates, except food, which are pellets (Omega one w/ garlic)

That hose is the output of my bio-reactor. I have seachem de-nitrate in there a low flow of 30 GPH to control nitrates. It is now covered in some slime and brown stuff. It is a typical vinyl hose from home depot. Wonder if this could be a source of diatom nutrients.

the PBT is happy tho; always coming out when I walk buy thinking I am going to feed it.

 

[Reincarnate]

Have you been running your lights this whole time? What your seeing might be Diatoms, but until your tank really stabilizes your going to see all kinds of colors show up. Some more desirable than others.

http://www.reefcleaners.org/nuisance-algae-id-guide

 

[mcgyvr]

welcome to reefin'..

Looks like normal new tank..
Be happy.. those rocks need some color whatever it is.. so white

Probably just diatoms..

 

[2015GaTor]

That's a beautiful PBT. I plan to get one myself. Though I have heard if you plan on having multiple fish he should be the last one you put in your tank because he might be very aggressive to other fish once he get established. It looks like diatoms, which is a good thing to see. I got diatoms 4 weeks in but I used the instant ocean bio spira to help the tank along. Welcome to the club!

 

[spicytofu]

That's a beautiful PBT. I plan to get one myself. Though I have heard if you plan on having multiple fish he should be the last one you put in your tank because he might be very aggressive to other fish once he get established. It looks like diatoms, which is a good thing to see. I got diatoms 4 weeks in but I used the instant ocean bio spira to help the tank along. Welcome to the club!

I know but i found a guy on CL selling his for $40. I couldnt pass it up. Hopefully he will be friendly towards new fishes. My next ones will be a goby, firefish, and some clowns. I dont think I will put another tang in there for now.