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Not yet. I'm doing a dry start so no wet reading yet

Andy at Tankscape has contacted me to offer a completely new power pack which complies with UK requirements. That will make me feel a bit safer having the unit plugged in and running permanently.

Just for information I have this light on a 30cm cube doing a dry start. Tested PAR levels today without water and measures 45 - 50 at substrate level. I'll update this post when its filled with water and I've tested PAR again. Bought from this site. UP PRO-Z 30cm 10x LED Hanging Plant Light...

Andy they were a problem at 30cm above the surface, detracted from the scape and I've been thinking about making panel to go around the edges, perhaps just an inch or 2. Ideally it would be nice to source an aluminum shade that would fit over the lights - they are a bit to industrial in...

I have two tiles over a 90x45x45. http://ukaps.org/forum/viewtopic.php?f=35&t=11074&start=40#p128487 I have then at about 80%. I'm having a few problems with my tank but it's unlikely the lights, more likely the co2. I've dropped my units to 20 cm above the surface since doing the Par...

I've posted my findings with the PAR meter in my journal

Clive believe it or not I may have a light issue. I took some PAR readings today after my meter arrived and I have 40 at the surface dropping to 18 midwater then about 12 at substrate level. I'll take some more readings when I can and perhaps produce a PAR chart for the LED lights. How slowly...

I think that would be very useful. Its one thing trawling the net for information and another to have someone knowledgeable summarise the information for you. Look forward to reading it Darrel. That powerpoint presentation is a thing of beauty although a lot of it is nice pictures to me :)

Thanks Tom. I find the management of a planted aquarium fascinating and I really appreciate the science that is put forward on this forum in an easy to understand way. What's missing from the article section is a plant physiology primer. You can find the info if you search but there's no...

Clive they are in Ada Amazonia, fresh from the amazon so to speak! I'm not switching them round I give more nitrate than phosphate. The crypts are actually not to bad, have only minor yellowing with green veins, it's the hydrocotyle that's the problem. It's biomass has halved. The new leaves...

Clive it's so obvious when you point it out. So my plants are all growing which means the light is above the LCP. The light does look dim to me, I would have expected it needed to be brighter (but thats lumens not PAR) The fact I have some yellowing and pinholes especially on the hydrocotyle...

co2 is about 5 - 10 drops per second (to fast to count) and drop checker is yellow day and night (4dkh water), solenoid comes on 2 hours before lights, goes off 2 hours before lights out. drop checker goes lime green overnight. dosing EI for a 40 gallon tank. 1/2tsp kno3 + 1/8tsp kpo4 + 2tsp...

James I have a few problems with my crypt wendetii green and my hydrocotyle sibthorpoides. Especially the latter is showing yellowing of older leaves and pinholes. The new growth is relatively good and nice and green. I plan to introduce a spray bar soon to maximize my flow and co2...

I not sure this information is available. This is what I understand so far. We use PAR to assess lighting for plants rather than lumens, lux etc. We see lumens and plants use PAR. What I am unable to find is the optimal PAR level for the average planted aquarium. Light compensation points...