Using red sea reef mature after dr tims fishless cycle

[tram]

Hi
Ive been using dr tims one and only to cycle my reefer 250, which is set up bare bottomed and contains 20kg of reel reef rocks ( this was supplied dry here in uk ). I put 2 litres of Siporax in sump on day 6.
Yesterday I did a 40% water change and today on day 21 my tests are,

NH4=0
NO2=0.25-0.5
NO3=100

pH7.95
SG 1.025
26C

Im worried that the cycle has stalled and that I need to do something, I have a box of Red sea mature starter pack and wondered if I could add the bacteria culture from it to get things going again.

Ive not turned my Hydra lights on yet..... Should I

Also should I use the NO3PO4-X to bring down the Nitrates.

Sorry so many question.

Thanks
Tony

 

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Did you use Dr Tims ammonia or some food to 'feed' the cycle?

My initial reaction on the NO3 was that it was a testing error, seems unnaturally high. Do you have another test kit or did it measure that way twice?

 

[tram]

Yes I used dr Tim’s ammonium chloride. I’ve used both salifert & Red Sea nitrate test kits and both have given off the scale results. I did read that having nitrite can cause error in nitrate result but after the water change I was expecting a lower figure regardless.
Any other test kits that don’t use the pink indicator may show other result, maybe, I don’t know.
T