Reefkeeping South Africa » Marine Aquariums of South Africa

Marine Aquariums of South Africa

UV and Glass, Whats the true?

Posted: November 24th, 2009, 11:03pm CST by lIghty

So, when installing a DE MH light bulb its always been said that you need to place a piece of 4-6mm glass below it to shield out the harmful UV light, I've even advise this to others, but is this true?

The reason I ask it because I've just built a UV exposure box for making PCBs, it uses 2 small 6w UVC bulbs, peaking about 350nm if I'm correct. The light has to travel through 2 pieces of 4mm glass (8mm total) before hitting a UV sensitive material, and guess what, it reacts extremely well. So that would mean that the light has no problem going thought the glass!

So does the glass actually do something or are we mistaken? Found this on WIKI, it seems only glass with "Cerium(IV) Oxide" can absorb UV.

[/quote
while cerium(IV) oxide can be used for glass that absorbs UV wavelengths (biologically damaging ionizing radiation).[quote]

Can anyone advise explain?:whistling:
evolutionary trait on some anthia species

Posted: November 24th, 2009, 10:48pm CST by crispin

hi sara,
i was taking pics the other evening and was wondering if you or anyone else could shed light on the purpose and function of the small beak like protrution off this anthias upper lip. they all have it and I was wondering what the function is?
Dorry Pets- CT guys want anything?

Posted: November 24th, 2009, 9:33pm CST by Renannchen

Hey guys im going down to Cape Town next week Teusday as you all know i just opened a Dorry Pets in Bloem. If any1 want anything give me a pm and will bring it down for you. Or send Lanzo a pm and he will organize with me, i can only take down hardware and no LS. So if any1 wants anything from Dorry Pets just give me a shout!:thumbup:
Any idea what LPS this is?

Posted: November 24th, 2009, 8:35pm CST by Kunhardt

Anyone have a positive id on this LPS? I hate the name "meat coral" which is what ppl refer to it as or Doughnut...my guess was Scolymia.
Dorry Pets Opening New Shop in Bloemfontein

Posted: November 24th, 2009, 8:08pm CST by lanzo

Hi guys

Im glad to announce that we are opening a shop in Bloemfontein

Now the cheetas can get some decant stock locally and you don't have to come all the way up to Gauteng to buy stock;)

Hardware is almost already fully operational.

Stock that we have in bloem at the moment that you can choose from:

13 buckets Neo Marine Brightwell salt buckets
4 seachem reef salt buckets
Prodibio
Growtech
Testkits

Rest of the stock will be going down within december

Livestock will be up and running by Januarie

The man behind the ropes in bloemfontein is Renaldo.(Renanchen)

So if anybody needs anything in the freestate...just drop him a pm.
He will be up shortly;)

Happy reefing guys

MAKING MARINES AFFORDABLE

regards
Lanzo
Online shop

Posted: November 24th, 2009, 5:07pm CST by Moolis

Hi Reefers

At last - between myself and Richard we have been working very hard and constantly in our spare time on Pet Stop's ON LINE shop.

It is definitely taking shape and coming along now.

Have a look at www.onlinepetshop.co.za

Look at the specials on Prodibio, the skimmers and selected other hardware:thumbup:

We will constantly update the products and info on the products, to meet my deadline of 1 Match 2010

A SPECIALS COLUMN ON THE HOME PAGE:slayer: coming soon

PS. if you do see a mistake (Richard is not a marine hobbyist (yet;)) ) please email me at moolis@petstopsa.com or via the site so i can fix it.
Hi every one.

Posted: November 24th, 2009, 5:02pm CST by Dean76

Hi, I am Dean.

New to marine tanks and fish. Just got a nano tank to start with and find out all about the hobby I can, plus to see if it grads me with both hand.

Just finished setting it up. Water and sand is in and the tank is running.

Well look forward to meeting new people and getting all the help that I can from the website.

All the best regards,

Dean
Fish shops

Posted: November 24th, 2009, 3:19pm CST by johanboshoff

Hi everyone

I am as you all know new to thew marine thing. Im busy getting all the hardware ready for my setup and would like to know where and what fish shops to visit to get the best deals on hardware and best livestock in Cape town. I have absolutely no idea where to start looking. Im going to town tomorrow so i will make some time to go check them out and maybe get some bits and bobs.

(PM me if we cant use names on the forum, i was not sure)

Regards Bossi
ReefOcto TS1 Help needed pls

Posted: November 24th, 2009, 1:42pm CST by Jaco Schoeman

Hi guys

I have a ReefOcto TS1. I need your advice on one or two issues.

1) The skimmer is making it's small air bubbles, but every second or so it makes a big "blump" noise and a bigger bubble in between the rest. I have two pipes from the overflow running into that compartment, and Lanzo suggested that the pump is sucking in bigger bubbles from there; but even if I move the skimmer away from there, it still does that. I have turned the skimmer on it's head, yet it still doses this. Is this a problem and if so, how do I fix it?

2) I REALLY need to get this skimmer to work like a demon... I am feeding Cyclop-Eeze, Phyto and Zoo three times a day, but the skimmer is really just making the inner tube of the cup "dirty"... I do not have much fish, only three Firefish and my tank is a 280litre system, but still, you'd think with all the feeding it would skimm like crazy.

How could I make it skimm better? I have seen the mod thread, but have no idea of what the hell that person is talking about.:P I currently have the TS1 submerged in flat on the sump floor at about 23cm depth of water. Would lifting it up help anything?

Please give me some advise...
Reektek T5 Question

Posted: November 24th, 2009, 10:38am CST by Pads

Hi Guys

Has anyone managed to get the lumens value on Reeftek T5's specifically the 10000k 54w bulbs. I've read through a few posts, notably Jaco Schoeman's on the some of the different t5's, but no references to the Reeftek globes. Anyone got more info. Shot ;)
Kosi Bay

Posted: November 24th, 2009, 9:33am CST by ben lloyd

I just got back from kosi bay and what an honour to stay at TEBA cottage for a week and that over spring tide.
Well we did not manage to land one of the big king fish but we had some fun with black tips sharks.
New member Ajay

Posted: November 24th, 2009, 8:41am CST by AjayH

Good morning, im Ajay and interested in setting up a marine aquarium after owning a few tropical setups, just not sure where to start since it seems that it is expensive at the begining, is there a budget setup to start with or do you suggest that i save up and get a good set up.

Also what would i need as a starting point.

thanx
Serious Problem - Iodine Overdose

Posted: November 24th, 2009, 8:05am CST by danimal

Hey Guys

I started my iodine dosing regimine last night - as I dont yet have a test kit, the plan was to dilute 20mL into 100mL RO water and then add 20mL at a time once a week. I did this last night, added my 20mL, then afterwards I was fiddling with the tank and the container with the rest of the solution was resting on one of my bracings. You can guess what happened next.

Bumped it over by accident, spilling the whole lot into the tank (total water volume is 400L). Immediately ALL my corals closed up. Luckily I had a 20L bucket with salt water on had, did an immediate change. As the evening progressed the corals started opening up again and looking happier. Went to bed a bit worried but hopeful.

This morning everyone is looking happy, colours are fine and everyone is open. However the tank is MURKY! and seems to be getting murkier. Did a quick ammonia and nitrate test and they're both fine. Could this be related to the iodine? I am planning on getting 50L of water after work today to do another change, what else could I do?

Thanks