or one of the following
http://www.ebay.com.au/itm/25cm-Wat..._Equipment&hash=item3f186d2946#ht_3586wt_1139
http://www.ebay.com.au/itm/Car-Auto...ccessories&hash=item58940e3ebb#ht_2027wt_1139
http://www.ebay.com.au/itm/Adhesive...ccessories&hash=item2a1e17d5ac#ht_1926wt_1139
i think some are waterproof some arent...otherwise ill go with what i used as a moonlight on my old aquaone tank but in white
http://www.ebay.com.au/itm/Worldwid...384725?pt=AU_Pet_Supplies&hash=item3371d91715
http://www.ebay.com.au/itm/25cm-Wat..._Equipment&hash=item3f186d2946#ht_3586wt_1139
http://www.ebay.com.au/itm/Car-Auto...ccessories&hash=item58940e3ebb#ht_2027wt_1139
http://www.ebay.com.au/itm/Adhesive...ccessories&hash=item2a1e17d5ac#ht_1926wt_1139
i think some are waterproof some arent...otherwise ill go with what i used as a moonlight on my old aquaone tank but in white
http://www.ebay.com.au/itm/Worldwid...384725?pt=AU_Pet_Supplies&hash=item3371d91715