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Lighting - T5 VS Metal Halide


Joe

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Hi people,

I just want to know which of the two is best, and the pros and cons of each. I'm looking at getting a new tank (selling my old one though) so I need to know which type of lighting to get so I can maybe change the plants of the lid to easily incorporate the lighting. Also I was thinking of an open-top tank, but then what about condensation and fish jumping out? So I was sort of thinking of having a well-fitting glass lid, but then is it safe to then have the lighting up against the glass? Plus do these sorts of lighting become quite hot and need some sort of cooling device thingy? I've only had experience with T8, and I'd like to go more high-tech and better quality.

Please help me out!

Joe

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I have a 150W metal halide for a shop fitting because it was cheap, and have that in a bit of wood screwed to my roof. It's about 45cm from the water level (open top) and the plants are doing very well, carpeting plants grow well too (tank is 50cm high). This light does get very hot (I hang some clothes by it sometimes to dry them when it's wet outside :lol: so they will need a lot of free room around them or a fan. I've never used T5's before, but this was an amazing upgrade from T8's that's for sure.

Open top does cause a lot of evaporation, but that just makes you keep on top of water changes more. I have had a few fish jump out (tetra's and a rainbowfish) but if you have floating plants or lots of plants at the surface it will obviously help reduce the risk.

You don't need to buy a professional (and expensive) lighthood to have it looking nice either, bit of glitter and some cool stickers and it can look very pretty :lol:

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I havn't used T5, but I had 2x 150w MH over my 4.5ft tank and combined with CO2 the plants grew like they were on steroids. As phoenix44 says, the ripples make the cost of running all worth it. I used shop fittings off trademe and even used the 4000 K bulbs... was a little bit yellow but I off-set that by running a couple of daylight standard flouros.

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This light does get very hot (I hang some clothes by it sometimes to dry them when it's wet outside so they will need a lot of free room around them or a fan.

Well that answers that! I don't really think mum would want extra lights hanging from the ceiling above a fish tank :lol:

You don't need to buy a professional (and expensive) lighthood to have it looking nice either, bit of glitter and some cool stickers and it can look very pretty

I hate stickers and glitter :lol:

Just wondered, what types of T5 lighting are there? I've heard of T5 HO (high output) and T5 VHO (Very high output). Which is best and what are some examples of the VHO, because I only really know about the HO.

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Righty ho. I was looking at the Arcadia Overtank Luminaire T5 Quad Lighting hoods, and I really like the look of them. When I get my new tank made, I'll probably opt for something around 90cm long, so the 90cm Quad would suit my needs. The website that I was looking at was an overseas one, and they were priced at around $600. It was in pounds so I converted it to NZ dollars by the way. Can you get them in NZ for this price? I know Hollywood Fish Farm stocks these lightinghoods, and I was browsing on their website, but they don't show the prices :-? . Also, what are the best T5 tubes? The ones so far that I really like are the Arcadia tubes and the Hagen Glo series.

Open top does cause a lot of evaporation

Would I need a dehumidifier if I did get metal hlide? My tank's in my room, and I don't really fancy water dripping on me while I'm asleep :lol:

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good luck finding a light unit

the Arcadia series 3 T5 unit looks great but doesnt perform that well for the price.....the current Arcadia OT2 unit looks freakin awesome but it will come with a very very high price tag

the glo stuff works very well but the look of the unit isnt very sexy and if you want 4 T5's you will have to get 2 units

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i've used both before and i got better growth with the glo unit but the arcadia looked sooo much better

the arcadia doesnt seem as bright, maybe cause of the reflector plus a 90cm unit is like $1000 vs the glo which is about $190 per unit

i would love to try the new OT2 but its order only from overseas

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