cyanobacteria or coralline during cycling ?!

reagent

New Member
D8A4D570-71B7-43E2-9473-29DAE1D46C50.jpeg D7ED788C-C64B-4F81-9C96-05FFF6E5C6D6.jpeg 04BC1DAA-2969-4830-AC77-F9905FA4027E.jpeg 4183CA5A-1BFC-4896-B346-C0122A415B33.jpeg E07C66CE-D957-4A05-9962-FF6398C99286.jpeg D8A4D570-71B7-43E2-9473-29DAE1D46C50.jpeg D7ED788C-C64B-4F81-9C96-05FFF6E5C6D6.jpeg 04BC1DAA-2969-4830-AC77-F9905FA4027E.jpeg 4183CA5A-1BFC-4896-B346-C0122A415B33.jpeg E07C66CE-D957-4A05-9962-FF6398C99286.jpeg Hi all,
I am new here and new to the hobby. After some research, I started with used RS max 250, that was stocked with everything by someone else but he stopped after a crisis due to temperature. Anyway, I got the tank full of live rocks, however, I kept them in a pocket for four days, did little brushing, then added to the tank. Now, It is the second week in cycling, I didn’t use any additives. I notice these pink, purple, and red things growing on the rocks. I am not sure what are these; cyanobacteria or coralline?!
I tried to brush it a bit, but it can’t be removed.
I am not in hurry to stock my tank, instead I would like to do everything slowly but in a right way.
My water parameter for today:
KH: 6
PH: 8.3
Salinity: 1.027
HH3: 0
NO2: 0
NO3: 9
PO4: 0
Ca: 500
Mg: 1800
Temp: 25.2 c
Any information is highly appreciated :)
Thanks
 

reagent

New Member
I don’t know how to calculate the flow, but I am have the original RS pumps 1200 & 2400 lph and two powerheads 1000gph.
How can I fix high Mg ?


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PSU4ME

JoePa lives on!!!
Staff member
PREMIUM
Rock looks like it’s got a bit of both but more of it looks like coralline.

Think of possibly adding 1-2 mp10s in the tank.

As for the high mg, double check the test first. The test fresh mixed salt water...... need to find the source. If your fresh mix is around 1300, then water changes will bring it down. 1800 isn’t going to crash your tank so no reason to rush it. 20% wc a week will help
 

reagent

New Member
I think it was my mistake topping up with saltwater not RO. 10% wc yesterday, retested today, and Mg is 1400.
I see an issue with Kh 6, is that normal for beginning or should I add something?
Should I consider my cycle complete or it is wise to wait for a week or two ?


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