Colombo Flora Nitro 250ml

The dosing syringe makes it easy to add just the right amount after testing, and within a week my sagittaria started sending out runners. Really cleared up the deficiency without any guesswork.

My plants were looking pale, so I tested the water and started dosing this—within a week the new growth was noticeably greener. The 250ml bottle is a good size for my tank, and I like that you can measure exactly how much to add based on the test results.

My nitrate levels were stuck around 40 ppm no matter what I did, and this brought them down to a stable 10 within a week of dosing. The integrated test-and-treat system makes it foolproof, even for a beginner like me. My java fern finally stopped melting and is putting out new leaves.