does Dennerle Deponit really makes a difference?

[carlfsk]

Have any body tried the Dennerle Deponit as base fertiliser?

Did you observe any different in your plant growth? I do. I realised the tennellus is growing long leave, and I mean really long, which is about 6inch long. This is my home tank.

I have planted some tenellus in the office (in different tanks), but with normal base fertiliser of another brand. But they remained very low as compare to those at home.

Is the difference really due to the base fertiliser? Or is it just some coincidence?

[davescube]

maybe they are looking for light?

[carlfsk]

Just funny, cos at home, I am using 150watt MH (2ft depth) while in the office, I'm using 2FL tube of 25watt each (1ft depth).

[Jervis]

Helpful with pix

[carlfsk]

Here it goes, these are from my home tank. The length of each leave stretched to 5 - 6 inch long. Will post some pictures of office plants tomorrow.

[Jervis]

Just funny, cos at home, I am using 150watt MH (2ft depth) while in the office, I'm using 2FL tube of 25watt each (1ft depth).

You probably find it unbelievable... there is a possibility the plant at home is getting more light than office. Due to the huge difference in height. Possibly that's one of the major reasons.

[Shadow]

I thought it is normal, mine is about 4 to 6 inches as well using ADA amazonia II. some of the leaves is redish, so I'm sure I have more than enough light.

[carlfsk]

So it could be due to light that the plants are growing tall, because they are getting what they wanted, instead of the base fertiliser.

Or the fertiliser plays a part in it too.

And so, we can't really conclude anything about the base fertiliser for now....

[carlfsk]

I thought it is normal, mine is about 4 to 6 inches as well using ADA amazonia II. some of the leaves is redish, so I'm sure I have more than enough light.

What type of lighting are you using and how deep is your tank?

[Shadow]

150W MH, 1.5 depth

[blue33]

Mine only about 3-4inches the most, with reddish colour. Minus soil around 34cm, about 103W light on 2ft tank. Colourful Richard, his outside display tank, only grow about 2inches the most and he's having 3ft 54W on about 30cm deep tank.

[carlfsk]

150W MH, 1.5 depth

Roger. Yours is enjoying a even higher light than mine.

Another curious observation is that those in the office with low light (FL tube), they appear reddish for most leaves.
Whereas those at home with stronger lighting, most are green, though some do show some hue of red. But not as prominent as in the office.

So I suppose whether they appear red or green has not much to do with light...

[carlfsk]

Mine only about 3-4inches the most, with reddish colour. Minus soil around 34cm, about 103W light on 2ft tank. Colourful Richard, his outside display tank, only grow about 2inches the most and he's having 3ft 54W on about 30cm deep tank.

I noticed his as well, very short. Pondering what causes the differences.

I have a friend who just started a new planted tank few weeks back using the same soil and base fertiliser as mine at home. The only different is that he is using 2 45 watt T5 light, with a distance of the tube and the plants of about 50cm apart.

I will be visiting him this Saturday. Will observe the differences in growth from mine. Will update subsequently.


BTW: my MH bulb (home) is hung about 10 - 12 inches above water surface. Tank is 2ft deep.

[Jervis]

Roger. Yours is enjoying a even higher light than mine.

Another curious observation is that those in the office with low light (FL tube), they appear reddish for most leaves.
Whereas those at home with stronger lighting, most are green, though some do show some hue of red. But not as prominent as in the office.

So I suppose whether they appear red or green has not much to do with light...

As mentioned... I think your home tank is getting more light than your office. That's why they remain short and reddish at home.

[Jervis]

BTW: my MH bulb (home) is hung about 10 - 12 inches above water surface. Tank is 2ft deep.[/I]

There you have it... 150W over a 3ft distance... is definitely not a lot of light. It also depends on the fixture, ballast, reflector finishing & design, bulb and lifespan of bulb.

[blue33]

I notice one thing, your leave is thin and long where as mine is wide and short, strange? Could it be the nutrients supply beside lighting? I feed lots of CO2 and nutrients, sometime more than EI method.

[Shadow]

Roger. Yours is enjoying a even higher light than mine.

Another curious observation is that those in the office with low light (FL tube), they appear reddish for most leaves.
Whereas those at home with stronger lighting, most are green, though some do show some hue of red. But not as prominent as in the office.

So I suppose whether they appear red or green has not much to do with light...

It should, well at least that what I read. One think is what is your MH color temperature? because with 2ft depth, the red spectrum intensity left only about 30%

[Shadow]

I notice one thing, your leave is thin and long where as mine is wide and short, strange? Could it be the nutrients supply beside lighting? I feed lots of CO2 and nutrients, sometime more than EI method.

That probably because of different species, there is wide leave version of E.tenellus