For UK koi keepers, the May Bank Holiday is more than just a long weekend – it’s the moment our “living jewels” truly come to life. As the Cheshire sun starts to hold its warmth and pond temperatures finally climb, we move from the dormant winter months into the peak of the hobby.

Why Now? While the calendar says Spring starts in March, koi biology follows the thermometer. Now that we are seeing consistent double-digit temperatures, your koi’s metabolism is revving up. This is the weekend to:

• Upgrade the Menu: If your water is consistently above 12°C, you can begin transitioning from easy-to-digest wheatgerm to high-protein growth formulas.
• The “Spring Health Check”: As fish become more active, it’s vital to monitor for any signs of “winter sulking” or parasites that wake up just as fast as the koi do.
• Bio-Filter Kickstart: Your beneficial bacteria are finally multiplying. Help them out with a partial water change (remember the dechlorinator!) to keep those nitrate levels in check.

New Season Arrivals At N-Koi, we’ve been preparing for this weekend for months. Whether you are looking for a standout Kohaku or a vibrant Ogon, the start of the season is the best time to introduce new additions so they have the full summer to settle in.