Water chemistry after adding first fish

[coloradoreefer94]

I finished cycling my 20 gallon last week and added a pair of juvenile clowns and two LPS frags last night. I just tested all of my water parameters and got these results below. should I be concerned with anything here, particularly nitrate, alkalinity and calcium? Is there anything I should do or am I good? The clownfish seem to be healthy and happy, and eating.

Extra detail: used RODI water and IO reef crystals, Carib sea life rock and live special grade sand.

Used Salifert test kits for all of these.

pH: 8.2
Ammonia: less than 0.1
Nitrite: 0.05
Nitrate: 25 (roughly)
Phosphate: 0
Magnesium: 1350
Alkalinity: 7.0 dkh
Calcium: 490 ppm

 

[rcpiv93]

Your nitrates are fine. Keep an eye on them and consider a small water change this weekend. But I know plenty of people that keep beautiful reef tanks at 25ppm.

As for the rest, your alk is a bit low, but I wouldn't worry about it too much. At this stage in the process, focus on establishing a robust bacterial population to keep the tank cycled.

 

[Spare time]

What test kits?

 

[rcpiv93]

What test kits?

The OP mentions that they are all Salifert.

 

[Spare time]

I would make sure to have some phosphate for the corals

 

[Mr. Mojo Rising]

Nitrate is getting to the higher side, I would be getting ready for a water change this weekend. Be careful with feeding in the beginning, don't overdo it until your system matures a little.

The zero phosphate is a concern, and the alk at 7 is too low for corals IMO.

 

[coloradoreefer94]

Nitrate is getting to the higher side, I would be getting ready for a water change this weekend. Be careful with feeding in the beginning, don't overdo it until your system matures a little.

The zero phosphate is a concern, and the alk at 7 is too low for corals IMO.

I did a 30% WC earlier in the day before adding the fish (24 hours before these test results) should I perform another water change?

 

[rcpiv93]

I would be patient. Test again and then decide.

 

[Science/G]

Get your alkalinity up a bit to between 8-9. Feeding frozen foods will add phosphates. And a 10% water change In a few days couldn't hurt.