Get yourself a gravel vacuum/syphon. That should solve your algae-on-gravel problem. The syphon just sucks up water and any loose waste. But it also helps mix up the gravel a bit so it'll help keep the algae from growing there again if you use the vac weekly to do your water change.
The albino/choc plec would be the albino morph of the common plec (which is usualy either called albino or chocolate because - well I suppose some people think it looks chocolat-y in color
![Stick Out Tongue :p :p](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
). Rubebrnose plecs are not the same as bristlenoses. Bristlenoses are much hardier in my experience and also generaly grow a bit bigger. Rubbernoses are also known as bulldog or rubberlip plecs and most species require a well-aerated tank and some actualy preffer the temp on the lower side and need a good current. To be honest though, no fish is going to solve your problem - not even otos.
First off, adding fish will just add to the nutrients in the water which will encourage even mroe algae to grow but, mroe importantly, adding a fish to eat the algae is treating the symptoms when you should be addressing the cause. Weekly water changes of 25% are essential, gravel vacs will help as well, reducing the hours of light to 8 reduces green algae but won't have an effect on brown realy. If you preffer green algae though, increase your lighting hours to 12
![Stick Out Tongue :p :p](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
. The main thing is to not over-feed, not over-stock, keep up with maintainance and be patient as it'll be a while before the tank settles and stabilizes and the brown algae starts to go. Scrape it off meanwhile.