Monday 20 January 2014

108 Litre "Puddle Garden" Outdoor Balcony Pond - Week 6 Update

Quick update on the "Puddle Garden"... i noticed the Limnobium Laevigatum (aka frogbits) starting to display a yellowish hue on their older leaves, which from my experience, could be an indicator of nutrient shortage.

So i did a set of water parameter measurements and these were the results...

From left: pH, Ammonia, Nitrite and Nitrate.

I took the water sample at night, and as expected the pH (yellow) is on the lower side, most likely due to the increase in Co2 levels from the high plant density respiring during darkness.

Ammonia (yellow) and nitrite (light blue) measurements are zero which indicate that the cycle is stable.

Nitrate (yellow) is also at zero level as expected , which means the fast growing plants are indeed consuming all the nitrates as soon as its produced.

Looks like the plants in the water garden are able to more than handle the current bio-load so far, therefore i might have to start dosing some fertilizers (or perhaps increase the bio-load progressively) to supply more nutrients to the growing plant mass.

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