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I inject quite high levels of CO2 plus liquid carbon but still needed to reduce lighting a fair amount. I think you're looking at reducing light a bit less than me. Maybe some tracing paper or something similar would reduce it to a more acceptable level for you. This also acts as a diffuser...

Hi Chris, I had the same(ish) senario. Too much light - 2 twin power compact T5s each 55w giving 110w over 60 ltr tank :jawdrop . I bought the lighting as an investment for a bigger tank which I never got round to getting, this was supposed to be a temporary arrangement. Instead of changing...

I think (with the greatest of respect) we need a bit more information: Any CO2 injection? Liquid? Substrate? What ferts? What flow/turnover of water? What plants? What W/C or maintenance regime are you following/going to follow? How many plants do you currently have in your tanks i.e: heavily...

I have to agree with the above. I think I remember Ceg saying change them when the don't work any more. and that's not a case of "if it ain't broke, don't fix it" They will still throw out a lot of light, even if this gradually deteriorates over time. If you are running on a low-tech, low...

I've not used one myself but I'm sure you would have at least 5mm tolerance on each side. They are plastic fittings so would bend that much anyway. Why not just e-mail (or phone) the provider? they will let you know That way you get the information from the horses mouth and if it doesn't fit...

Sounds a bit bazaar! Must have been a faullty one unless extremes in temperature caused it? (but not that effect after a couple of hours of usage).

My photoperiod is 4.30pm to 11.30pm (high lighting so shorter photoperiod). The tank doesn't get much (if any) natural light during the day, so I can enjoy it in the evenings and monitor any changes/problems.

Pogostemon helferi and H. callitrichoides do not need particularily high light (but won't do well under low lighting). If you went for 2wpg (65ltr = approx 20usg) 40 watts should do them fine depending on the rest of your setup, flow rates make a remarkable difference with regards to...

I assume the 190 refers to litres, therefor 42 gallons. For most plants you would need about 2 watts per gallon or 84 watts of light This is based on T8 lights, T5s are more intense so you could get away with less. I would put another T5 in there, I know you say you can't get one in but I bet...

The 36w pc tubes are 16 inches in length (plus filtting = about 18inches),to get this over a three gallons tank it must be a long thin shallow tank. 18 x 7 x 7"? What are your dimensions? EDIT: just re-read your post 14x8x8. Must be an overhead luminaire with lots of oversplill of light! Is...

now that's what I call "Very High Light" What's the setup? CO2, fert dosing, biomass?

Well it's going to happen. I've bought the unit (possibly unwisely) and I'm going to put it to the test, I'm awaiting delivery. I know it's going to be a challenge the only problem is I don't know what the challenge is going to be. I assume algae? Any advice (other than don't do it) would be...

I'm about to put 110w (increase from 30w)on a 60ltr, or 20usgal ,tank. I've just bought the interpet twin T5 compact starter and two 55w lamps. It is moderately planted. I have FE CO2 and dose EI. I know this sounds rediculously high and works out to 5.5 wpg (with T5s!), but according to...

Brilliant article, not sure I fully understood on the first read, but go the gist of it and will re-read when I put it into practice! And me, when the neighbours come round I can bore them silly and they won't stay too long. As for the parents-in-law I'll invite them round and might even make...