Monday, 31 December 2012
Tuesday, 25 December 2012
Monday, 17 December 2012
Monday, 10 December 2012
Anyway the reason for this post is to share what I found on the internet. I've been googling about nutrient for plants as my pak choi has difficulty to get green leaf, despite healthy. Look what I found from a company that supplies fertilizers in the US (NACHURS): about NITROGEN
"Nitrogen serves as the source for the dark green color in the leaves of various crops. This is a result of a high concentration of chlorophyll. Nitrogen combined with high concentrations of chlorophyll utilizes the sunlight as an energy source to carry out essential plant functions including nutrient uptake."
There you have it. Looks like my system is still not mature enough as the plants show difficulty to get greener leaf.
"Nitrogen deficiency shows up in the yellowing or chlorosis of the plant leaves. The yellowing will start in the oldest leaves, and then will proceed to develop on younger leaves if the deficiency continues."
My system don't have the above problem, so the level of insufficiency of nitrogen could be low. A good guide for those into gardening and have no idea what is going on in their plants: Micronutrient Deficiencies
And the role of micronutrients.
Hope this'll help.
Sunday, 2 December 2012
Monday, 26 November 2012
- Stones in the fish tank - I put white stones in the fish tank because my tank is black so I can't clearly see the darker fish. It is similar to what I use in the grow bed, only much bigger in size. The stones promote phytoplankton (green algae) growth providing more food for the fish. It also provide place for nitrosomonas bacteria to hang out which helps breaking the waste that settled at the bottom of the tank. Seeing the fish nibble on the stones is common in my system.
- Pump with variable pressure - with no experience, you might need to experiment on water in and water out from the grow bed to get the automatic syphon working, this kind is invaluable.
- Fish count - I should have bought more fingerling when I started this project. They will provide more waste to the grow bed thus could mature it faster. However when the fish grew, I might need to move them into separate tank(s) to avoid over crowd. Less/ smaller fish caused slower grow bed maturity.
- Different kind of fish - weeelll this could be right depending on what you have in mind, and that was on my mind too when I first planned this. I want a mix of edible fish and ornamental fish at the same time. But I found out that some fish should never be mixed. Tilapia can be gruesome at times, especially on weak and smaller fish. DON'T mixed them unless with bigger fish. They even nibble on my one year old son's fingers when he put his hand in the tank.
- Pre filter - I should have wait for the grow bed to mature because of (1) above. Then only it is suitable to start using pre filter.
- Using pebbles in grow bed - you might found many people using pebbles with no problem. BUT it actually depends on where you live AND where you set up your system at home. I live in tropical country, we get over 300 days of sunlight a year and my system is exposed to the sun from as early as 7 in the morning until 3 in the afternoon. The sun goes down around 7. Imagine how hot the pebbles is going to get even with shades.
Monday, 19 November 2012
Sunday, 18 November 2012
Tuesday, 13 November 2012
Sunday, 4 November 2012
It was raining in the evening for over a week now. The fish get fresh water everyday and they look happy but not my kesum. All the leaves turned brown despite the cool weather. So yesterday I pulled all of them out. To my surprise they even grow new leaves under the surface, in between the pebbles! But somehow still failed to grow green.
I replanted the kesum just now. I planned to do it in the evening if it is not raining but it rained and just stopped. I replanted my 3 weeks old pak choy too. Hopefully they will survive this time.
Tuesday, 30 October 2012
My only pak choy on the other hand is growing but the leaves are yellowish. Still a long way to go for me and this project...