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Recent content by .jaap.

  1. J

    What tubes?

    You have a strange way of quoting. What I said is: For growing plants there are two important factors: How much light is produced (lumen) and how efficient is that light when it is used by the plants: The tabel does not mention lumen :idea: but growth efficiency.
  2. J

    Pearling

    The bubbles that you see are probably strings of air bubbles that originate at specific spots on the plants leaves and not in between. It seems to me that at these points the leave is damaged, enough to let the air out on that spot. This is different from the bubbles that you see on the...
  3. J

    What tubes?

    Mercury vapor in the tube creates UV light, which strikes the phosphor coating on the inside of the tube. The phosphor absorbes the UV and converts the energy in the UV into the visible light that you see. Over time, the mercury vapor is absorbed by the coating, and the lamp will loose much of...
  4. J

    Pearling

    Some plants species pearl easily while others usually don't. None of the plants on your list are especially good at pearling. In fact, I think pearling of Anubias, Crypts, Echino's is not a healthy sign. If you want pearls you should have sufficient light and nutrients (incl. CO2) but also the...
  5. J

    introduction

    I have recently sent a dimmer to switserland. Shipping costs are almost 20 Euro which is a bit steep for only one item. And you have to pay taxes on arrival. But, if you want one I can send you one ofcourse. I guess we better use email for further discussion.
  6. J

    introduction

    I got interested in changing the amount of light during the day by this post: http://www.aquaticplantcentral.com/foru ... -pjan.html This works for my tank too. Ofcourse you need to install additional TL tubes, and you will use the additional light only a short time during the day, which makes...
  7. J

    introduction

    First of all, you need dimmable gear for the TL tubes. This is the expensive part of the setup, unless you can find them somewhere cheap ofcourse. The gear come in two flavors: digital controlled (DALI interface) and analog controlled (0 - 10 Volt interface) make sure you get the 0-10 V analog...
  8. J

    James3200s 6.5x2x2' planted tank - UPDATE - 26/06/09

    I am impressed with this setup. Would'nt mind having something like that next to my desk. About the CO2 diffusor: From the picture it appears to be mounted upside down, also water through it is flowing bottom to top which is usually top to bottom. Is that intentional ?
  9. J

    introduction

    WAP suffers from the same problem as many other clubs: the age of the members. They just have too much time on their hands ;) Consequently they prefer to get in the car and drive around visiting each other. Regular visits to germany ( "Arbeitskreis Wasserpflanzen") included. Internet is just...
  10. J

    introduction

    Thanks for all the info ! In Holland there are special interest groups too, for live-bearers, cichlids, killies, and we also have an very active WAP (workgroup aquatic plants) The NBAT contest is not mainly a contest. The idea is that someone experienced and well trained (you have to do some...
  11. J

    what species plant is this ?

    Thanks for the name ! All this sp. narrow sp. green and sp. broadleaf 'from pantanal' stuff is really confusing me :) Maybe you or anyone else can help me out with the following plants also: 1 2 3 4 5 6
  12. J

    introduction

    From hobbyist perspective. In Holland there are over 200 local clubs, and these clubs are united in national NBAT. However, only few percent of aquarium hobbyists are member of one of these clubs. Many starting aquarium hobbyists still rely on information they get from LFS or worse, garden...
  13. J

    what species plant is this ?

    Can anyone tell me the name of this plant ? Probably Pogostemon but what species ?
  14. J

    introduction

    This is an animated GIF made up from some pictures taken at different light levels of my own tank. My own tank I primarily played around with the front tube and the back tube. And here is one of an other tank: In this tank different colors TL tube were used to make different coloured...
  15. J

    introduction

    Not sure if this should be a new topic or just a post under 'Welcome ;) if so maybe a moderator can move this for me. I am from Holland, and curious how things are organised in the aquarium hobby here in the UK. So I registered and tried some stuff out like placing pictures in the gallery...
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