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By Zebra
Hello,
Awhile back I ordered a cheap little heater from eBay, $13 free shipping, it arrived today.
It says "explosion proof" Carbon fibre 230v 16w preset 25c -/+ 1c. Came with an Asian plug and I couldn't find the same model with au plug.
Quite a nice little unit with indicator light,
Red= active heating.
Blue= At temp.
I got a $50 Bunnings gift card for my birthday but can't be bothered going anywhere today to buy a new plug, So I found an old 2 wire power cord and some insulated 250v screw connectors and wired it up like this for now, Still a fully safe stable connection and would be fine to leave as is, but I'll get a plug one day soon.
Brown to brown, Blue to blue- pretty simple, sometimes old wires use different colours, tbh the polarity hasn't seemed to matter on any of the other non earthed 2 wire devices I've used, but it's still a good idea to just follow the colours there.
Ensure the wires are clean and making solid connection, and the screws are tight enough to hold them securely in place.- don't leave bare wire hanging out. Also make sure the connectors are 250v rated as some aren't.
One of the suction cups came broken, I'll tell the seller, but for now I just replaced it with a spare I had, The suction cup that wasn't broken looks really good and holds the heater very well, all in all it actually looks like a very well made unit, very clean and tidy, nice construction.
Installed, plugged in and operating fine, will have to monitor it over the next few days to see how it holds temp, it's in a 15L tank holding about 10L of water.
Minimum temp in that tank through winter has been around 15c, This heater is replacing a faulty aquaone heater I was able to get a refund on.
So far quite impressed.
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By cathiienguyen
I bought 7 RCS for my 2.5 gal tank yesterday (no filter/heater). I also have a marimo ball as well as some java moss. I was wondering if this no filter set up is okay for my RCS? This morning they were acting less active than yesterday. They weren't picking at the marimo ball or anything, and were all just standing still..
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Must Read SKF Articles
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By beanbag · Posted
I don't know if bacteria is the cause. It seems to be an uncommonly diagnosed problem because most shrimp articles only talk about bacteria infection as "a few shrimp die every day / week" What can I say, a standard dose of minocycline and erythromycin didn't work to stop it, so not sure if oxytetracycline will work. -
By jayc · Posted
Ah yes. That was the injectable form of oxytetracycline. Each mL of the injectable form contains: 100 mg oxytetracycline HCl, 5.75% w/v magnesium chloride , 6 H2O, 17% v/v water for injection, 1.3% w/v sodium formaldehyde Sulfoxylate as a preservative and q.s. with propylene glycol. Basically, it has additional compositions in it. 1000mg might have been the dose recommended for the injectable oxytetracycline, but if you have the powder form then follow the dosing rates as recommended on your bottle. Hope that clears it up a bit. As for doxycycline and it's use to treat short antenna ... I cannot comment on whether it will be more effective than oxytetracycline or not. But if you do use it, only try one at a time. Is bacteria even been proven to be the cause of "short antenna disease"? -
By beanbag · Posted
14 April 2015 - Update based on experiences of one of our SKF members. Unfortunately for this shrimpkeeper it was too late to save these shrimps, but hopefully this experience will help someone else. 250+ shrimp were lost before the bacterial infection was halted. A vet was consulted and he eventually ended up contacting a senior lecturer of aquatic animal health at University of Adelaide school of veterinary science. He stated that bacterial infections being internal or external are almost always gram negative in aquatics and recommended using oxytetracycline at a dose rate of 1000-2000mg per 40ltr of water. Dosing method: Oxytetracycline is available in 2 forms. Powder and injectable. The injectable form was used as it is a stronger form. This meant that we could use less to obtain the required dosage. Dosed straight into the water column at 1000mg per 40ltr of water. -
By jayc · Posted
What?! Can you point me to where you saw that please? If in doubt, Always follow the directions on the bottle. -
By beanbag · Posted
What is the recommended dosing for oxytetracycline? The sticky thread has a mention of " 1000mg per 40ltr ", but I don't know if that refers to total amount of powder, or active ingredient percentage. I live in USA, where oxytetracycline is not as common, but I was able to obtain a bottle of powder. On the bottle, it says [calculated out to] 75 mg / 10 gal, which is a wayyyy lower value. Also, the manufacturer / distributor won't tell me the fraction of the power that is active ingredient vs filler. This is for a Taiwan Bee shrimp tank with pH 5.5 and Gh 5, in case that matters for the effectiveness of oxytet in these parameters. I also have doxycycline available if that is equivalent / better. It's to treat that "short antenna disease" in one of my tanks that seems to show up once every few months. I've already dosed with Maracyn 1 (erythromycin) and 2 (minocycline) and they didn't seem to work.
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