Aquaponics Systems in Hong Kong

It took me the whole of last week but I have finally built a prototype of aquaponics system on my balcony. I also spent about an hour and a half yesterday to shop for my fish. After walking around for more than an hour I’ve decided the best fish to add for my system is six six-month old Koi fish. They are colourful, resilient and easy to take care of.

As Sylvia Bernstein in her Aquaponic Gardening book said, the fish is the power and the fun of the system. My partner and I spent hours looking at the auto syphon flushing water from the boxes and how happy the fish come up to greet us when we feed them in the morning afternoon and evening. They are like our children now, that we will go out on the balcony to check on first thing in the morning and the last thing to do before going to bed.

Just look at them,

fish in the barrel
fish in the barrel




Transplanted them two days ago and new leaves are appearing already.

Balcony Aquaponics


The system is assembled on the south-facing balcony. It has sun light for the whole day and being on a raised level it is the perfect location for my grow boxes.


The contraption is actually a water circulating system for the grow box and the fish tank. Using a close loop ensures the water pressure is evenly distributed to both the fish tank and the grow boxes.


The sprinkler is for aeration of the water in the fish tank to enhance oxygen level in the water for the fish.


The grow boxes are assemble and ready to be filled.


Stage 4 testing – with plants transplanted from the hydroponic growing system.


Water being flushed into the sump from the grow boxes and fish tank.

It’s working!

The Summer of Plenty

The warm weather is finally here to stay, perhaps a bit of understatement at that, and the temperature is well up there near the top of twenties Celsius. The entire garden is rejoicing with tremendous growth. In one week the grape-vine has grown 12 inches; the bitter gourd which had sprouted but with marginal growth is now in full bloom; once I added liquid nutrient the lettuces in the hydroponic boxes come alive.

The strawberry plants I bought in the new year have been bearing fruits, and they are sending little suckers out to expand its territory. I am exploring vertical growing technique by building a two level boxes to provide landing pad for the extensions. Once the new suckers take root then I can cut of the stem link and grow that as a new plant.

Sunshine, Oh So Brief!

I have not blogged for a couple of weeks, because, it was such horrible weather – rainy patches and cloudy sky for almost everyday – since my last post. Was it that the weather that made the plants so depressed or the people so unenergetic? Anyway, yesterday was full of sunshine and warmth, the whole day was sunny with temperature in mid-twenties and humidity 70%, perfect weather for growing, which is when Fiona decreed the spring has finally transfer power to summer.

Well not so quickly, today it’s turned damp and foggy again and the weather forecast is for the week to have more rain patches and humidity of 90%-100%. How can we have 100% humidity, I ask myself? No wonder many of the flowers died, including the borage that was blooming with purple flowers before the dampness set in. Now I am pondering the same fate for the next batch of squash flowers.

The lettuces are doing fine despite all of this. We have harvested one full tray of endive leaves and made a beautiful salad tossed with red leaves lettuce, spring onion, tarragon and sage. A little balsamic vinegar and olive oil together with Canadian Angus beef and sausage, it’s a typical farmer’s dinner.

Dampness or not more seedlings are sprouting – garden lettuce, Taiwanese Kuai Cai, apple cucumber, chili and others. Fennel is growing into a young adult and rosemary continues to spread her wings. The fig trees are sending out new leaves so that in the summer it can dance with the sunshine. miraculously the deemed-to-be-dead basil seed bed came back to live with more first leaves emerging. So we just have to brace of the last days of the spring-mother-nature and cheers the summer to arrive.

Salad Unlimited

This site was launched this morning, and I have been receiving some very good comments already. Thank you so much to all of you that have taken the time to comment to make my blog better.

My growing have been going on for quite a while now and although my squash plants had never gotten any pollination because of the weather, one vegetable I have been able to enjoy (fresh from the garden) is my endive and red lettuce leaves.

The other night, we had a dinner of BBQ steak bought from the market but we have also been able to sample the lettuce grown hydrologically on my balcony. Of course the plants were not mature enough to be harvested as a whole head of lettuce, but it didn’t stop us from cutting one leave from each plant to make a nice big bowl of salad. Toss them with balsamic vinegar and our own basil olive oil, it’s a dynamic green salad to go with grilled steaks.

Think about this, the lettuce will continue to grow but we can just pick a leaf off everyday to make our salad. My supply will definitely be limitless.

By the way the taste was superb (really blowing my own trumpets here) and what can be crisper and fresher than leaves picked from the plant and served on the plate in a matter of minutes?

Launch of New Site

Today is the launch of this new site for the slow food and slow farming experience. I call this my “Really Slow Cottage” experience.

In the recent issue of Sai Kung Magazine a reader was fretting that there isn’t much written material available in Hong Kong for growing and gardening that takes into consideration of the local climate.

Well, you would have read from my post couple of weeks ago that the weather was really in extreme in Hong Kong and how can one plan for sewing the seeds and growing by reading books and magazine that were written for European or American climate.

Plus, where do you go to find seeds that you are looking for and what soil or medium is best to grow what kind of vegetable. Where can you get your own bag of horse manure? What and how to compost in an urban environment without upsetting you neighbours.

I hope you will find answers to your question here, however, if I haven’t cover what you are looking for yet please feel free to drop me an email. Happy reading!

Frost Bite Basil Plant

The weather has finally let up today. In the last few days it had been raining, fog covered and with temperature in the mid-teen, which I hardly think was frosty conditions. I did not get out and check the seedlings for three days, particularly I was travelling to Macau for Thursday and Friday, and yesterday it was so foggy it was almost like from the scenes of “The Fog” (by Joe Caepenter, 1980, and then remake by Rupert Waiwright, 2005), so I stayed inside all day.

I went out on my balcony this morning, to check on the troops and especially to change and clean the boxes. It was then that I realized about a third of the basil seedling had turned brown and died. That was strange, because they were growing very healthily and some second leaves were coming out, but when I inspected the compost I found a layer of ice on top and that, I suppose, was what had killed my seedlings.

Today, the weather offers the plants a brief reprieve to stretch their leaves and roots. I cleaned the boxes of the nutirent solution and left them empty, for one or two day until the substrate become dry, so that the roots can take up some air. I covered the lid for the basil seedlings, hoping that it will keep the compost warm as the daylight is providing some sort of radiation to heat up the chamber. I will re-inspect them again later this evening to determine if any further actions might be required.

The weather forecast is for raining patches and 85%-90% humidity to continue for next week until Thursday. The temperature is dropping to low-teens again, so I need to be more vigilant with protecting the seedlings.

The brighter side is a report of good health with the endive and red leaves lettuce. Leading the race, though, continues to be by those plants raised in perlite, with eggplants on perlite delivering a few nice speciments. The squash flowers had a hard time with the rain and some flowers had broken off the stem so no luck for any pollination. I will need to germinate more seedling for the summer crop. May be tomorrow, I can do that.